An allergy refers to a misguided reaction by our immune system in response to bodily contact with certain foreign substances. When these allergens come in contact with the body, it causes the immune system to develop an allergic reaction in people who are allergic to it. It is estimated that 50 million North Americans are affected by allergic conditions. The parts of the body that are prone to react to allergies include the eyes, nose, lungs, skin, and stomach. Common allergic disorders include hay fever, asthma, allergic eyes, allergic eczema, hives, and allergic shock. Read more: Allergy (Allergies) Article
Multimedia: Slideshows, Images & Quizzes
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Bad Bugs: Identify Insects and Bug Bites
What do bug bites look like? How do you treat bug bites? Why do bug bites burn? See spider bite pictures and learn how to...
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Childhood Diseases: Measles, Mumps, & More
Is your child at risk for these childhood diseases? Know when to call the doctor for conditions such as measles, mumps, ringworm,...
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Drug Interactions: What Foods, Drugs, Herbs Affect Medications?
What foods, drugs, and herbal supplements interact with your pharmaceuticals? Learn about grapefruit and other common drug...
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Sinus Infection (Sinusitis) Symptoms & Treatment
Sinus infection (sinusitis) symptoms can include headaches, a sore throat, and toothaches. Antibiotics and home remedies can...
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Common Childhood Skin Disorders
What are the most common skin rashes in children? Learn about childhood eczema, ring worm, chicken pox and more. Get the facts on...
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Eczema and Atopic Dermatitis Rashes: Causes, Symptoms, Types, Treatment
Eczema is a common allergic skin condition. Learn more about types of eczema like atopic dermatitis, dyshidrotic eczema and baby...
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Picture of Poison Ivy
Skin inflammation that results from contact with the poison ivy vine. Chemicals produced by this vine cause an immune reaction,...
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Picture of Atopic Dermatitis
This condition is the most common of all pediatric dermatoses. See a picture of Atopic Dermatitis and learn more about the...
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Picture of Nickel Contact Dermatitis from Necklace
Nickel contact dermatitis. This itchy rash is a common allergic reaction to your skin coming into contact with nickel from...
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Picture of Urticaria
Urticaria, also known as hives, is a skin rash with red, raised itchy bumps. They may also burn or sting. The whelts often last...
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Picture of Dermatitis Medicamentosa (Back)
Dermatitis Medicamentosa Dermatitis medicamentosa (more commonly known as "drug eruption") is a type of skin reaction to certain...
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Picture of Nickel Contact Dermatitis
Nickel contact dermatitis. This itchy rash is a common allergic reaction to your skin coming into contact with nickel from...
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Picture of Allergic Contact Dermatitis
Allergic contact dermatitis. Exposure to the oily sap (urushiol) of poison ivy, poison oak, and poison sumac can result in...
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Picture of Tattoo Allergic Reaction
Tattoo Allergic Reaction. It is possible to have reactions to the inks or the metals in the needles used in tattoos, causing...
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Picture of Gingival Hyperplasia from Phenytoin
Gingival hyperplasia from phenytoin. Gingival hyperplasia can result in some patients who are taking the anti-seizure medication...
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Picture of Allergic Contact Dermatitis (Arm)
Allergic Contact Dermatitis on Arm. This example of allergic contact dermatitis is a reaction to a henna tattoo on the arm, after...
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Picture of Dermatitis Medicamentosa
Dermatitis medicamentosa is commonly called drug eruption and is a type of skin reaction to certain medications. Its harmless but...
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Picture of Fixed Drug Eruption
Fixed drug eruption. FDEs occur as an allergic reaction to drug exposure and appear as round, dark spots on the skin. Pain and...
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Picture of Allergic Contact Dermatitis (Tattoo)
Allergic contact dermatitis. This is reaction by your skin after coming into contact to some substance that you are allergic to....
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Human Body Quiz: Human Body Systems & Organs
The Human Body Quiz will help you learn about your little-known body parts! Take this quiz to learn more about your body and what...
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Allergies Quiz: Symptoms & Home Remedies
What are the causes of allergies? This online quiz challenges your knowledge of common food and household allergens,...
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Common Allergies: Symptoms and Signs
What are allergies? Pollen, food, perfumes, and many more things can provoke allergy symptoms. Allergies are an overreaction of...
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8 First Aid Kit Essentials for Scrapes, Cuts, Bug Bites, and More
Are you always prepared for a first aid crisis? See which basic first aid items to pack to treat minor scrapes, cuts, and stings...
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Picture of Eye Allergies
Severe allergic eye symptoms can be very distressing and are a common reason for visits to the allergist or ophthalmologist. See...
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Picture of Allergic Reaction to Lipstick Tattoo
Some people develop allergic reactions to tattoo pigments -- especially red pigments. See a picture of Lipstick Tattoo Allergic...
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Picture of Photoallergic Reaction
An allergic reaction caused by drugs in which ultraviolet exposure changes the structure of the drug so that it is seen by the...
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Picture of Iododerma and Bromoderma Granulomatous Reaction
Another baleful characteristic of drug eruptions from halides is persistence and extension of reaction once it occurs. See a...
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Picture of Iododerma and Bromoderma
Iodides and bromides are drugs that can cause severe adverse cutaneous reactions, and of these, the worst are acneiform,...
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Picture of Atopic Dermatitis or Eczema
Eczema is a skin condition caused by inflammation. See a picture of Atopic Dermatitis or Eczema and learn more about the health...
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Picture of Henna Tattoo Reactions
The FDA has received complaints from people who have received products marketed as henna temporary tattoos, especially so-called...
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The Most Common Food Allergies for Kids and Adults
What common food allergens cause the most problems for adults and children? See this list of common food allergies and learn to...
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Before You Tattoo: Types, Safety, and Removal
Get the scoop on tattoo safety, tattoo risks, tattoo care, and what to expect from tattoo removal.
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10 Signs Your Allergies Are Out of Control
Learn 10 signs your allergies are out of control. See these surprising allergy symptoms and find out how to get relief for...
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Allergies: 10 Ways to Reduce Mold Allergies
WebMD shows you 10 ways to fight the fungus and reduce mold allergy symptoms from dust masks to bottles of bleach.
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Children's Health: 11 Pictures of Common Skin Rashes
What causes skin rashes in children? See which chemicals in your home could be causing your child's skin rash, irritated skin,...
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Facial Health: What Your Skin and Face Symptoms Can Reveal About You
What medical problems appear on your face? Look into the mirror and find out. Jaundice, glaucoma, skin cancer, and cracked lips...
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Nasal Irrigation: Natural Relief for Cold & Allergy Symptoms
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When Animal (Allergies) Attack: Pet Allergy Symptoms, Treatment
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Cosmetics Quiz: Test Your Skin Savvy
Take this quiz and test your skin savvy on makeup, mascara, and other cosmetic skincare beauty products.
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Healthy Home: How Often Should This Be Cleaned?
House cleaning can improve your health. Learn how often to do the laundry, organize clutter, and clean your refrigerator among...
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Nasal Allergy Attack: Causes, Triggers, Treatments
Nasal allergies are a common problem that affects millions of people. An allergist can recommend the best allergy nasal sprays...
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Pictures of Allergy Relief Tips at Home: AC Filters, Electronic Air Cleaners, and More
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Dangerous Allergies: Anaphylaxis and Life-Threatening Allergy Triggers
Common allergy triggers may provoke anaphylaxis. Hives, tongue swelling, face swelling, rashes, low blood pressure, rapid and...
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Allergies: Common Plants and Trees That Trigger Allergies
Find out more about which plants and trees might be producing pollen that is causing your itchy eyes and a runny nose.
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Home Allergy Quiz: Is Your Home Allergy-Proof?
Take this home allergy quiz and test your knowledge on allergens, dust mites, pollens and more to see how allergy-proof your home...
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Allergies: Myths and Facts About Seasonal Allergies
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10 Worst Cities for Spring Allergies
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Itchy Eyes? Top 13 Ways to Tame Eye Allergies
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Healthy Home: Tips for a Clean, Safe Home
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Preparing for Severe Allergies at School
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Allergies: Signs of a Severe Allergic Reaction
Find out from WebMD's slideshow how to tell if you or someone near you is having a severe allergic reaction.
IMAGES
Allergy (Allergies) See pictures of allergic skin disorders such as eczema, contact dermatitis and more caused by allergies See ImagesRelated Disease Conditions
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What Is Mucus?
Mucus is a normal substance produced by lining tissues in the body. Excess mucus or mucus that is yellow, green, brown, or bloody may indicate a problem. Mucus production may increase when allergies, a cold, flu, cough, or sore throat are present. Antihistamines and cold and flu medications may help alleviate excess mucus. A neti pot may be used to decrease nasal congestion and clear mucus.
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Sinus Infection (Sinusitis)
Sinus infection (sinusitis) is caused by allergies, infection, and chemicals or other irritants of sinuses. Signs and symptoms include headache, fever, and facial tenderness, pressure, or pain. Treatments of sinus infections are generally with antibiotics and at times, home remedies.
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Genetic Diseases
The definition of a genetic disease is a disorder or condition caused by abnormalities in a person's genome. Some types of genetic inheritance include single inheritance, including cystic fibrosis, sickle cell anemia, Marfan syndrome, and hemochromatosis. Other types of genetic diseases include multifactorial inheritance. Still other types of genetic diseases include chromosome abnormalities (for example, Turner syndrome, and Klinefelter syndrome), and mitochondrial inheritance (for example, epilepsy and dementia).
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Skin Rash
The word "rash" means an outbreak of red bumps on the body. The way people use this term, "a rash" can refer to many different skin conditions. The most common of these are scaly patches of skin and red, itchy bumps or patches all over the place.
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Pink Eye (Conjunctivitis)
Pinkeye, also called conjunctivitis, is redness or irritation of the conjunctivae, the membranes on the inner part of the eyelids and the membranes covering the whites of the eyes. These membranes react to a wide range of bacteria, viruses, allergy-provoking agents, irritants, and toxic agents.
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Sore Throat
Sore throat (throat pain) usually is described as pain or discomfort in the throat area. A sore throat may be caused by bacterial infections, viral infections, toxins, irritants, trauma, or injury to the throat area. Common symptoms of a sore throat include a fever, cough, runny nose, hoarseness, earaches, sneezing, and body aches. Home remedies for a sore throat include warm soothing liquids and throat lozenges. OTC remedies for a sore throat include OTC pain relievers such as ibuprofen or acetaminophen. Antibiotics may be necessary for some cases of sore throat.
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Chronic Rhinitis and Post-Nasal Drip
Chronic rhinitis (non allergic rhinitis) causes runny nose, sneezing, nasal itching and congestion. Post-nasal drip is drainage of mucus from the sinuses into the throat. Treatment includes over-the-counter (OTC) medications.
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Mold Exposure
Mold exposure may cause symptoms in people who are sensitive to molds. Symptoms of mold allergy include sneezing, runny nose, wheezing, coughing, redness of the eyes, and rash. Prevent mold growth by keeping indoor humidity low, between 30%-50%, using bathroom fans when showering, repairing plumbing leaks quickly, and using an air conditioner during humid seasons.
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Itch (Itching or Pruritus)
Itching can be a common problem. Itches can be localized or generalized. There are many causes of itching including infection (jock itch, vaginal itch), disease (hyperthyroidism, liver or kidney), reactions to drugs, and skin infestations (pubic or body lice). Treatment for itching varies depending on the cause of the itch.
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Canker Sores
Canker sores are a common complaint, and are small ulcers on the inside of the mouth. Canker sores aren't contagious (as opposed to cold sores), and typically last for 10-14 days usually healing without scarring. A variety of things cause canker sores, for example, medications (aspirin, beta-blockers, NSAIDs, high blood pressure medication, and antibiotics); injury to the mouth from dental work, braces, or sports accidents; acidic foods; allergies; and diseases or conditions like celiac disease, Crohn's disease, and lupus. Canker sores can be cure with home remedies, and prescription and OTC topical and oral medication.
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Intertrigo
Intertrigo is a rash, usually found in skin folds, that is caused by rubbing, increased temperature, and moisture. Affected areas may be treated with a weak topical steroid and barrier cream.
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Bedbug Bites
Bedbugs (from the insect family Cimicidae) are small, reddish-brown tick-like insects that feed by sucking the blood of mammals. They are often found in poorly sanitized areas or in crowded living quarters.
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Bee and Wasp Sting
Bees, wasps, and fire ants are related insects that belong to the Hymenoptera order. There are thousands of species of wasps found throughout the world. Common wasps are yellow jackets and hornets. Types of bees include honey bees, the Africanized honey bee (killer bee), and the bumble bee. There are four types of reactions to a bee or wasp sting; local reaction, systemic allergic reaction, toxic reaction, and delayed reaction. Individuals who have a systemic or toxic reaction generally require immediate medical treatment to prevent anaphylactic reaction, and possibly death.
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How Long Does an Allergic Reaction Last?
Allergic reactions may last for varying lengths of time. They may take a few hours to a few days to disappear. If the exposure to the allergen continues, such as during a spring pollen season, allergic reactions may last for longer periods such as a few weeks to months.
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Hives (Urticaria)
Hives, also called urticaria, is a raised, itchy area of skin. Most often the cause of hives is unknown. Sometimes it is a sign of an allergic reaction to food or medications, but the cause of the allergy (the allergen) is unknown. Dermatographism and swelling (angioedema) may accompany hives. Treatment to get rid of hives and alleviate symptoms typically includes antihistamines.
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Can Eating Eggs Make You Nauseous?
Why do eggs make you nauseous? Learn what causes nausea after eating eggs and what to do about it.
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Vitamin D Deficiency
Vitamin D deficiency has been linked with rickets, cancer, cardiovascular disease, severe asthma in children and cognitive impairment in older adults. Causes include not ingesting enough of the vitamin over time, having limited exposure to sunlight, having dark skin, and obesity. Symptoms include bone pain and muscle weakness. Treatment for vitamin D deficiency involves obtaining more vitamin D through supplements, diet, or exposure to sunlight.
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Dry Skin
Dry skin (xeroderma) may be caused by external factors, like cold temperatures, low humidity, harsh soaps, and certain medications, or internal factors, such as thyroid disease, diabetes, psoriasis, or Sjogren's syndrome. Symptoms and signs of dry skin include itching and red, cracked, or flaky skin. The main treatment for dry skin is frequent, daily lubrication of the skin.
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Acute Bronchitis
Bronchitis is inflammation of the airways in the lung. Acute bronchitis is short in duration (10-20 days) in comparison with chronic bronchitis, which lasts for months to years. Causes of acute bronchitis include viruses and bacteria, which means it can be contagious. Acute bronchitis caused by environmental factors such as pollution or cigarette smoke is not contagious. Common symptoms for acute bronchitis include nasal congestion, cough, headache, sore throat, muscle aches, and fatigue. Acute bronchitis in children also my include runny nose, fever, and chest pain. Treatment for acute bronchitis are OTC pain relievers, cough suppressants (although not recommended in children), and rest. Infrequently antibiotics may be prescribed to treat acute bronchitis.
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Eustachian Tube Dysfunction
The Eustachian tube is a membrane-lined tube that connects the middle ear space to the back of the nose. Symptoms of Eustachian tube dysfunction or blockage include popping and/or clicking in the ear, and ear fullness and/or pain. Causes of Eustachian tube dysfunction or blockage include allergies, sinus infections, ear infections, and the common cold. Treatment includes home remedies to relieve pain and several maneuvers (swallowing, chewing gum, yawning, etc.), which can be done to improve Eustachian tube function. In severe cases, surgery may be necessary.
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Dry Mouth (Xerostomia)
Dry mouth is a common side effect of many prescription and non-prescription drugs and certain medical conditions. Symptoms of dry mouth include a sticky, dry feeling in the mouth, frequent thirst, sores in the mouth; sores or split skin at the corners of the mouth, cracked lips, a dry feeling in the throat, a burning or tingling sensation in the mouth, and a dry, red, raw tongue.
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What Are the 4 Types of Allergic Reactions?
Allergists recognize four types of allergic reactions: Type I or anaphylactic reactions, type II or cytotoxic reactions, type III or immunocomplex reactions and type IV or cell-mediated reactions.
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Eczema
Eczema refers to skin inflammation. There are many different types of eczema that produce symptoms and signs that range from oozing blisters to crusty plaques of skin. Treatment varies depending upon the type of eczema the person has.
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Yeast Infection vs. Diaper Rash in Infants, Toddlers, and Children
Diaper rash in infants, babies, toddlers, and children is caused by Candida, the most common type of fungus. Signs and symptoms of diaper rash includes red, elevated skin that may be visible under and in the creases of the skin, groin, or anus. Yeast diaper rash is not painful. Treatments for diaper rash include antibiotic creams, lotions, natural home remedies, over-the-counter (OTC) medicine, and oral antibiotics. Yeast infections in infants, babies, toddlers, and children can cause diaper rash and thrush. Signs and symptoms of thrush include thick, white lacy patches on top of a red base that can form on the tongue, palate, or elsewhere inside the palate. Treatment for yeast infections caused by Candida fungi are similar to the treatments for diaper rash. If Candida gets into the bloodstream of an individual they may get sick with or without a fever. If the Candida infection spreads throughout the body up to 45% of people may die. Even with common mouth thrush can cause critical illness and may be more resistant to normal treatment.
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Is the Stomach Flu Contagious?
The stomach flu or gastroenteritis is caused by bacteria, viruses, and parasites. Symptoms include vomiting, diarrhea, nausea, and abdominal pain. Learn about how it is spread and how you can prevent infection.
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Is Sore Throat (Pharyngitis) Contagious?
The medical term for a sore throat is pharyngitis. There are many causes of a sore throat such as medications, diseases (GERD, cancer, AIDS), infections (Streptococcus or strep, mononucleosis), allergies, and smoking. Symptoms are a red, swollen throat; fever, and swollen lymph nodes. Treatment for sore throat depends on the cause.
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Atopic Dermatitis
Eczema is a general term for many types dermatitis (skin inflammation). Atopic dermatitis is the most common of the many types of eczema. Other types of eczema include: contact eczema, allergic contact eczema, seborrheic eczema, nummular eczema, stasis dermatitis, and dyshidrotic eczema.
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Sinus Headache
Sinus headache is caused by a sinus infection or inflammation of the sinus cavities. Symptoms of a sinus headache include pain, runny or stuffy nose, and chronic cough. There are many causes of sinus headaches including sinusitis or sinus infection, allergies, smoke, infections, or colds. Treatment for sinus headache depends on the cause. Some home remedies may relieve sinus headache pain symptoms.
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Keratosis Pilaris (KP)
Keratosis pilaris (KP) is a skin condition in which white bumps appear on the upper arms, thighs, face and cheeks. Read about KP treatment, causes, diagnosis, home remedies, and prognosis.
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Makeup Allergy
Fragrances and preservatives in cosmetics may cause allergic reactions in some people. Symptoms include redness, itching, and swelling after the product comes in contact with the person's skin. Treatment typically involves the use of over-the-counter cortisone creams.
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Bad Breath (Halitosis)
Bad breath can result from poor oral hygiene habits and may be a sign of other health problems. Bad breath, also called halitosis, can be made worse by the types of food eaten and other unhealthy lifestyle habits.
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Food Allergy
The most common food allergies are to eggs, nuts, milk, peanuts, fish, shellfish, strawberries and tomatoes. Symptoms and signs of a food allergy reaction include nausea, vomiting, diarrhea, abdominal pain, itching, hives, eczema, asthma, lightheadedness, and anaphylaxis. Allergy skin tests, RAST, and ELISA tests may be used to diagnose a food allergy. Though dietary avoidance may be sufficient treatment for mild allergies, the use of an Epipen may be necessary for severe food allergies.
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Poison Ivy, Oak, and Sumac
Poison ivy, oak, and sumac contain a substance called urushiol, which causes a rash on people who come in contact with them. Symptoms and signs include a red, swollen, itchy, blistering, bumpy rash. Treatment involves rinsing the exposed area with water, taking antihistamines and over-the-counter pain medications, using topical treatments such as calamine lotion, and applying cool compresses.
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Blepharitis
Blepharitis is inflammation of the eyelids. Acne rosacea, staphylococcal bacteria, allergies, sensitivities to makeup or contact lens solutions, head lice, or other conditions may cause blepharitis. Symptoms and signs include itchy eyelids, burning sensation in the eyes, crusting of the eyelids, light sensitivity, red, swollen eyelids, loss of eyelashes, and dandruff of the lashes and eyebrows. Proper eyelid hygiene and a regular cleaning routine controls blepharitis.
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Contact Dermatitis
Contact dermatitis is a rash that occurs after exposure to an irritant. Symptoms of contact dermatitis include a red, elevated rash at the site of contact with the irritating substance. Contact dermatitis treatment may involve creams, application of cool water compresses, and applying topical steroids.
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How to Stop Snoring
Snoring, like all other sounds, is caused by vibrations that cause particles in the air to form sound waves. While we are asleep, turbulent airflow can cause the tissues of the nose and throat to vibrate and give rise to snoring. Any person can snore. Snoring is believed to occur in anywhere from 30% of women to over 45% of men. People who snore can have any body type. In general, as people get older and as they gain weight, snoring will worsen. Snoring can be caused by a number of things, including the sleep position, alcohol, medication, anatomical structure of the mouth and throat, stage of sleep, and mouth breathing.
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Anaphylaxis
Anaphylaxis is a serious allergic reaction that affects a number of different areas of the body at one time and can be fatal. Causes of anaphylaxis can be a food allergy, latex allergy, allergy to insect stings/bites, asthma, or other materials or conditions. Symptoms include flushing, itching, hives, anxiety, and rapid or irregular pulse. Severe symptoms may be throat and tongue swelling, swallowing, and difficulty breathing. Some disorders appear similar to anaphylaxis such as fainting, panic attacks, blood clots in the lungs, heart attacks, and septic shock. If you think that you may be having an anaphylactic reaction, seek emergency care or call 911 immediately.
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Indoor Allergens
Indoor allergens are substances that can cause an allergic reaction in some people. Common sources of indoor allergens include dust mites, cockroaches, molds, pets, and plants. Avoiding indoor allergens is one way to reduce allergy and asthma symptoms.
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Hoarseness
Hoarseness (abnormal deep, harsh, raspy voice) is caused by a variety of conditions in which the larynx (voice box and vocal cords) are irritated or injured. Causes can include vocal strain or other inflammation of the vocal cords by infection or toxins. Treatment of hoarseness depends on the cause.
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Asthma
Asthma is a condition in which hyperreactive airways constrict and result in symptoms like wheezing, coughing, and shortness of breath. Causes of asthma include genetics, environmental factors, personal history of allergies, and other factors. Asthma is diagnosed by a physician based on a patient's family history and results from lung function tests and other exams. Inhaled corticosteroids (ICS) and long-acting bronchodilators (LABAs) are used in the treatment of asthma. Generally, the prognosis for a patient with asthma is good. Exposure to allergens found on farms may protect against asthma symptoms.
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Snoring
Snoring is caused by the vibrations of the soft tissues at the back of the nose and throat while a person sleeps. There are many causes of snoring like being pregnant, allergies, asthma, colds, the flu, excess alcohol, some medications, smoking, and sleep position. Obstructive sleep apnea is a condition that causes snoring and can be serious. Treatments to reduce or stop snoring include lifestyle changes, home remedies, antisnoring devices and aids, medical treatments, and at times, surgery.
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Colic in Babies
Colic is crying or fussing that begins suddenly, lasting for a total of three hours a day and happening more than three days a week for about three weeks. Symptoms include the baby's face turning red, the belly is distended, the feet may be cold, the hands clenched, and the legs may alternate between being flexed or extended. Treatment may involve ruling out other causes of the fussing and the doctor prescribing anti-gas bubbly medicine.
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Hay Fever (Allergic Rhinitis)
Hay fever (allergic rhinitis) is an irritation of the nose caused by pollen and is associated with the following allergic symptoms: nasal congestion, runny nose, sneezing, eye and nose itching, and tearing eyes. Avoidance of known allergens is the recommended treatment, but if this is not possible, antihistamines, decongestants, and nasal sprays may help alleviate symptoms.
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How Do You Get Rid of Laryngitis Quickly?
Learn what medical treatments can help with laryngitis and speed up your recovery.
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Asthma Over-the-Counter Treatment
Patients who have infrequent, mild bouts of asthma attacks may use over-the-counter (OTC) medications to treat their asthma symptoms. OTC asthma medicines are limited to epinephrine and ephedrine. These OTC drugs are best used with the guidance of a physician, as there may be side effects and the drugs may not be very effective.
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Children's Health
Children's health is focused on the well-being of children from conception through adolescence. There are many aspects of children's health, including growth and development, illnesses, injuries, behavior, mental illness, family health, and community health.
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Eye Allergy
Eye allergy (or allergic eye disease) are typically associated with hay fever and atopic dermatitis. Medications and cosmetics may cause eye allergies. Allergic eye conditions include allergic conjunctivitis, conjunctivitis with atopic dermatitis, vernal keratoconjunctivitis, and giant papillary conjunctivitis. Dry eye, tear-duct obstruction, and conjunctivitis due to infection are frequently confused with eye allergies. Eye allergies may be treated with topical antihistamines, decongestants, topical mast-cell stabilizers, topical anti-inflammatory drugs, systemic medications, and allergy shots.
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Are Hives (Urticaria) Contagious?
Hives are not contagious are triggered by an allergic response to a substance. Symptoms and signs of hives include a raised, itchy red rash on the skin. An individual should seek medical care for hives if he or she develops dysphagia, wheezing, shortness of breath, or throat tightening.
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Cold, Flu, Allergy Treatments
Before treating a cold, the flu, or allergies with over-the-counter (OTC) medications, it's important to know what's causing the symptoms, which symptoms one wishes to relieve, and the active ingredients in the OTC product. Taking products that only contain the medications needed for relieving your symptoms prevents ingestion of unnecessary medications and reduces the chances of side effects.
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What Is Bromelain Good For?
Bromelain is a naturally occurring substance derived from the fruit, juice and stems of pineapples. Bromelain may be good for digestion, removing dead skin cells from burns and reducing inflammation, swelling, muscle soreness, pain and nasal congestion.
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Children's Cough Causes and Treatments
Children's cough causes include infection, acid reflux, asthma, allergies or sinus infection, whooping cough, and exposure to irritants. Treatment for a child's cough include cough medicine for children over the age of four.
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Allergy Treatment Begins at Home
Avoiding allergy triggers at home is one of the best ways to prevent allergy symptoms. Controlling temperature, humidity, and ventilation are a few ways to allergy-proof the home. Cleaning, vacuuming, and using HEPA air filters also helps control allergies.
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11 Facts About Sneezes and Sneezing
Sneezing is a common experience we all share. It is your body's method of removing anything that may be irritating the nose. Sneezing, in scientific terms, is also called sternutation.
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What Is Eosinophilic Esophagitis (EOE)?
Eosinophilic esophagitis is an inflammation of the esophagus. Eosinophilic esophagitis has many causes including acid reflux, heartburn, viruses, medications that become stuck in the esophagus, allergy, asthma, hay fever, allergic rhinitis, and atopic dermatitis. Eosinophilic esophagitis symptoms include difficulty swallowing food, abdominal pain, chest pain, and heartburn.
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Aspergillus Infection (Aspergillosis)
An Aspergillus infection is a fungal infection. Signs and symptoms can include cough, shortness of breath, wheezing, bloody sputum, difficulty breathing, and chest and/or joint pain. Treatment depends on the type and severity of the disease.
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Asthma Medications
There are two types of asthma medications: long-term control with anti-inflammatory drugs and quick relief from bronchodilators. Asthma medicines may be inhaled using a metered-dose inhaler or nebulizer or they may be taken orally. People with high blood pressure, diabetes, thyroid disease, or heart disease shouldn't take OTC asthma drugs like Primatene Mist and Bronkaid.
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Corneal Disease
The cornea is the clear outer layer of the eye. If it is damaged by disease, infection, or injury, vision problems may occur. Corneal problems can be detected by having an eye exam. Corneal problems can be prevented by protecting the eyes from injury and avoiding contact with people who have eye infections.
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Peanut Allergy
Peanut allergies causes signs and symptoms that include hives, itching, redness, and a rash. Severe reactions may cause decreased blood pressure, lightheadedness, difficulty breathing, nausea, and behavioral changes. Someone with a peanut allergy should have an EpiPen with them at all times.
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What Are the Best Treatments for Allergic Conjunctivitis?
Learn what medical treatments can ease allergic conjunctivitis symptoms and help speed up your eye allergy recovery.
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Frozen Shoulder
A frozen shoulder (adhesive capsulitis) is when the shoulder joint experiences a significant loss in its range of motion due to inflammation, scarring, or injury. Treatment involves anti-inflammatory medication, cortisone injections, and physical therapy.
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Asthma in Children
Asthma in children manifests with symptoms such as coughing and wheezing. Rates of asthma in children are increasing. Asthma in children is usually diagnosed based on the description of symptoms. Lung function tests may also be used. A variety of medications are used for the treatment of childhood asthma.
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What Is Allergic Cascade?
The allergic cascade refers to allergic reactions that happen in the body in response to allergens. A variety of immune cells and chemical messengers participate in the allergic cascade. Symptoms of the allergic cascade range from mild swelling and itching to full-blown anaphylactic shock. Allergen avoidance and medications are used to prevent or treat allergies.
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How Long Does It Take for Allergic Conjunctivitis to Go Away?
Without treatment, allergic conjunctivitis symptoms could last the entire time that your critical allergen is present — which can vary greatly.
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Sick Building Syndrome
Multiple chemical sensitivity (MCS) or also referred to as sick building syndrome or environmental illness is the name given by some to a condition in which various symptoms reportedly appear after a person has been exposed to any of a wide range of chemicals. The exposure may occur as a major event, such as a chemical spill, or from long-term contact with low-levels of chemicals, such as in an office with poor ventilation. As a result of exposure, people with MCS (sick building syndrome) develop sensitivity and have reactions to the chemicals even at levels most people can tolerate.
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Biorhythms
Biologic rhythms, or biorhythms, are how our bodies respond to the regular phases of the sun, moon, and seasons. A medical chronobiologist studies how the "body clock" or biorhythms affect diseases and how the body clock responds to treatment of diseases and conditions at different times of the day.
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What Are the Types of Eye Care?
Many common eye disorders resolve without treatment and some may be managed with over-the-counter (OTC) products. It's important to visit a physician or ophthalmologist is the problem involves the eyeball itself or the condition hasn't improved after 72 hours of use of an OTC eye care product.
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Are Food Allergies Passed Down Genetically?
A food allergy is a condition that causes your immune system to fight against a particular part of food — which is called an allergen. Food allergies can be hereditary — that is, parents can pass the likelihood of developing a food allergy to their children through genes that code for inherited traits.
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How Do You Know If You Are Allergic to Mosquito Bites?
Mosquito bite allergies can cause issues if untreated. Learn the signs of a mosquito bite allergy, what causes it, and what you can do to treat it.
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How Is Angioedema Treated?
Learn what medical treatments can help treat your angioedema symptoms and help you manage this condition.
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Insect Sting Allergies
The majority of stinging insects in the United States are from bees, yellow jackets, hornets, wasps, and fire ants. Severity of reactions to stings varies greatly. Avoidance and prompt treatment are essential. In selected cases, allergy injection therapy is highly effective.
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Drug Allergy (Medication Allergy)
Drug or medication allergies are caused when the immune system mistakenly creates an immune response to a medication. Symptoms of a drug allergic reaction include hives, rash, itchy skin or eyes, dizziness, nausea, diarrhea, fainting, and anxiety. The most common drugs that people are allergic to include penicillins and penicillin type drugs, sulfa drugs, insulin, and iodine. Treatment may involve antihistamines or corticosteroids. An EpiPen may be used for life-threatening anaphylactic symptoms.
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What Are the Two Crucial Signs of Anaphylaxis?
Anaphylaxis is defined as a group of symptoms exhibited by the body in reaction to a particular substance. Anaphylaxis is a potentially life-threatening reaction and therefore must be promptly spotted and treated.
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How Are Nasal Polyps Removed?
The surgical removal of nasal polyps is known as nasal polypectomy. The procedure is mainly performed under local anesthesia or general anesthesia. The physician relieves congestion of the nose using oxymetazoline drops or pellets. The polyps are removed with the help of polyp forceps without injuring the surrounding tissue.
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What Are the Signs and Symptoms of Allergic Conjunctivitis?
What is allergic conjunctivitis, and how do you recognize it? Learn the signs of allergic conjunctivitis and how to treat it.
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What Are the Symptoms of Ragweed Allergy?
The common symptoms of ragweed allergy are sneezing, runny nose, itchy, watery red eyes, headache, nasal congestion, eye swelling, rashes and coughing.
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COVID-19 vs. Allergies
Though there is some overlap in allergy and COVID-19 signs and symptoms there are also significant differences. Symptoms that they have in common include headache, fatigue, tiredness, shortness of breath, wheezing, and sore throat. Fever does not occur with allergies but is one of the defining symptoms of COVID-19 infections.
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Why Won’t My Allergy Symptoms Go Away?
Allergies happen when your body's immune system reacts to certain substances as though they are harmful. Allergy symptoms may not go away unless you avoid your triggers, stick to your medications, find the right combination of medications, and consider surgery.
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Latex Allergy
Latex allergy is a condition where the body reacts to latex, a natural product derived from the rubber tree. The reaction can either be delayed and cause a skin rash or immediate, which can lead to anaphylaxis. Avoiding latex is the most effective way to prevent an allergic reaction.
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Ticks vs. Bedbugs
Bedbugs are parasites. Ticks are arthropods. Tick and bedbug bites are typically painless. Calamine lotion can be helpful with both bedbug and tick bites. Bedbugs typically do not spread disease, while tick bites may often transmit disease.
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What Are Postnasal Drip Medications?
Postnasal drips refer to the feeling of mucus collecting or dripping inside the throat from the back of your nose (postnasally). This may occur when there is excess mucus formation, when the mucus becomes too thick or when the normal flow of mucus is blocked or hindered.
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Occupational Asthma
Occupational asthma is a type of asthma caused by exposure to a substance in the workplace. Symptoms and signs include wheezing, chest tightness, and shortness of breath. The usual treatment for occupational asthma involves removal from exposure and the use of bronchodilators and inhaled anti-inflammatory medicines.
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How Do You Tell If Your Child Has Allergies or a Cold?
Colds and allergies have different causes, but both involve the body's immune system. Since the symptoms of allergies and the symptoms of a cold overlap, it can be hard to tell which one your child has.
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Do Allergy Desensitization Shots Work?
Allergies happen when your immune system overreacts to harmless substances called allergens. Allergy desensitization shots make your body less likely to react to allergen.
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Is Allergic Conjunctivitis the Same as Conjunctivitis?
Allergic conjunctivitis may occur along with sneezing, runny nose, or sinus headache. Many people also find that they are tired and feel agitated.
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Should I Exercise Outside if I Have Allergies?
An allergy is a condition in which the immune system overresponds to a foreign substance. With the right treatment and precautions, you can completely eliminate allergy flare-ups during your outdoor workout.
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What Foods Cause Oral Allergy Syndrome?
Oral allergy syndrome, also called pollen food allergy syndrome or PFAS, is a type of food allergy caused by certain allergens found in both pollen and raw vegetables and fruits and some nuts. Foods that cause oral allergy syndrome include those in the birch, grass and ragweed families.
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How Do You Know if You Are Allergic to Pollen?
Pollen is a powdery yellow grain that fertilizes other plants of the same species. The only way to know for sure if a person has pollen allergy is to see a board-certified allergist for allergy testing.
Treatment & Diagnosis
- Cortisone Injection
- Flu Vaccine (Flu Shot)
- ELISA Tests
- Breastfeeding (and Formula Feeding)
- Sinus Surgery (Endoscopic) Procedure
- Dentures
- Dental Crowns
- Sclerotherapy
- Trigger Point Injection
- Pneumococcal Vaccination (Pneumonia Vaccine)
- Ear Tubes
- Skin Test for Allergy
- Vaccination FAQ
- Collagen and Injectable Fillers
- Allergy Shots
- Duodenal Biliary Drainage
- Itching
- Sore Tongue
- Red Spots on the Skin
- Leg Sores
- Shortness of Breath (Dyspnea)
- Vaginal Pain
- Swollen Eyes
- Penile Itching
- Blisters
- Watery Eye
- Rash
- Nasal Congestion
- Runny Nose
- Sneezing
- Swollen Tongue
- Wheezing
- Nipple Pain
- Eye Discharge
- Chapped Lips (Cheilitis)
- Dark Circles Under the Eyes
- Swollen Lip
- Pinkeye (Conjunctivitis)
- Laryngitis
- Allergy
- Dry Skin
- Insomnia
- Parosmia
- How to Choose a Doctor
- Snoring
- Doctor: Checklist to Take To Your Doctor's Appointment
- Doctor: Getting the Most from Your Doctor's Appointment
- Allergy Attacks? Fight Back
- Allergy: Winning the War Against Allergies
- Allergy: Taking the Sting Out of Insect Allergies
- Self Care: How Can I Help My Doctor?
- Allergies FAQs
- Human Body FAQs
- Wedding Ring Rash
- Mold Hazards, A Story From New Orleans
- Skin: Are Hypoallergenic Cosmetics Really Better?
- Spring Cleaning Tips for a Healthier Home
- Home and Family
- Are Hives Always Caused by an Allergy?
- Asthma Rates Increasing
- Questions To Ask Your Doctor - General
- Questions To Ask Your Doctor - Allergy
- Air Pollution and Allergies: A Connection?
- Pharmacy Visit, How To Get The Most Out of Your Visit
- Rash: Can Soaps & Detergents Cause A Rash
- Sense of Smell Wins Nobel Prize
- Deaths Rise with Ground-Level Ozone Warning
- Claritin Cleared of Birth Defect Hypospadias
- Allergies: Don't Sneeze at Allergy Relief
- 8 Myths and Truths About Poison Ivy, Oak, and Sumac
- What Are Strategies to Deal With Mite Allergies ?
- Do Anti-Mite Carpet Cleaners Help Mite Allergies?
- What Are Africanized Honeybees?
- What Is Exercise-Induced Asthma?
- Allergy to Stinging Insects Can Be Life Threatening
- 5 Food Allergy Myths
- What Causes Asthma?
- Acute Bronchitis Treatment Treatment Medications and Home Remedies
- OTC Cold and Cough Medications
- Air Travel, Colds, and Sinus Infections
Medications & Supplements
- loratadine - oral, Claritin
- fexofenadine 24-hour tablet - oral, Allegra
- fexofenadine - oral, Allegra
- fexofenadine/pseudoephedrine extended-release - oral, Allegra D
- pseudoephedrine/loratadine 24-hour tablet - oral, Claritin-D
- cetirizine - oral, Zyrtec
- desloratadine - oral, Clarinex
- loratadine/pseudoephedrine sustained-release - oral, Claritin-D
- loratadine liquid - oral, Claritin
- loratadine dispersible tablet - oral, Alavert ODT, Claritin RediTabs
- promethazine - oral, Phenergan
- prednisone
- cetirizine liquid - oral, Zyrtec
- diphenhydramine
- hydroxyzine
- Bronchodilators (Drug Class)
- Antihistamines (Oral)
- mometasone furoate
- Antihistamine Shots (Injections)
- azelastine (Astelin, Astepro)
- MSM (methylsulfonylmethane) Dietary Supplement
- Side Effects of Claritin (loratadine)
- promethazine, Phenergan, Phenadoz, Promethegan
- fluticasone (Flonase, Flonase Allergy Relief)
- cyproheptadine
- Nasal Decongestants
- cetirizine (Zyrtec, Zyrtec Allergy, Zyrtec Hives)
- Side Effects of Phenergan (promethazine)
- sodium chloride - intranasal spray (Ocean, Ayr Saline, Humist, NaSal, Little Noses, Ocean)
- cyproheptadine (Periactin)
- loratadine, Claritin, Claritin RediTabs, Alavert, Claritin Hives Relief, Children's Claritin
- Side Effects of Allegra (fexofenadine)
- hydrocortisone valerate
- fexofenadine (Allegra, Mucinex Allergy)
- salmeterol (Serevent)
- fexofenadine and pseudoephedrine (Allegra-D)
- prednisolone (Orapred, Pediapred)
- fluticasone propionate oral inhaler (Flovent)
- Side Effects of Singulair (montelukast)
- Side Effects of Xyzal (levocetirizine dihydrochloride)
- loratadine and pseudoephedrine (Alavert Allergy & Sinus, Claritin-D, Claritin-D 24 hour)
- chlorpheniramine, pseudoephedrine
- Side Effects of Periactin (cyproheptadine)
- quercetin
- Side Effects of Vistaril (hydroxyzine)
- EpiPen (epinephrine auto-injector)
- Side Effects of Claritin D (loratadine/pseudoephedrine)
- Side Effects of Flonase (fluticasone)
- hydrocortisone injection (Solu-Cortef, A-Hydrocort)
- mometasone (Elocon)
- triamcinolone acetonide nasal inhaler (Nasacort)
- Dymista (azelastine hydrochloride and fluticasone propionate)
- cortisone
- ipratropium
- beclomethasone dipropionate inhaler (Qvar)
- Side Effects of Nasacort AQ (triamcinolone acetonide)
- Nasal Allergy Medications
- Side Effects of Nasonex (mometasone furoate)
- levocetirizine
- budesonide nasal inhaler (Rhinocort Allergy, Rhinocort Aqua)
- pseudoephedrine (Oral, Afrinol, Sudafed)
- brompheniramine/dextromethorphan/phenylephrine
- Side Effects of Allegra D (fexofenadine and pseudoephedrine)
- Side Effects of Zyrtec (cetirizine)
- beclomethasone dipropionate inhaler (Beconase AQ, QNASL)
- Xyzal (levocetirizine dihydrochloride)
- betamethasone
- triamcinolone
- pseudoephedrine
- Does Immunotherapy Work for Allergies?
- Side Effects of Clarinex (desloratadine)
- clemastine - oral, Tavist
- cromolyn, Nasalcrom, Gastrocrom (Intal, Opticrom are discontinued)
- Side Effects of Nasalcrom (cromolyn sodium)
- epinephrine injection (Auvi-Q)
- Side Effects of EpiPen (auto-injectable epinephrine)
- Arcalyst (rilonacept)
- fluorometholone suspension - ophthalmic, FML, FML Forte
- chlorpheniramine
- Adrenaclick (epinephrine)
- Side Effects of Auvi-Q (auto-injectable epinephrine)
- propylene glycol/polyethylene glycol spray - nasal, Rhinaris
- flunisolide nasal spray, Aerospan (Nasalide, Aerobid, Aerobid HFA are discontinued)
- Side Effects of Rhinocort Aqua (budesonide)
- beclomethasone dipropionate nasal inhaler-spray
- Brompheniramine/Dextromethorphan/Pseudoephedrine
- desloratadine (Clarinex, Clarinex Reditabs)
- Beconase AQ (beclomethasone) Side Effects, Warnings, and Drug Interactions
- bitolterol mesylate
- Polmon (dexchlorpheniramine maleate)
- Quzyttir (cetirizine)
- Zetonna (ciclesonide)
- Side Effects of Veramyst (fluticasone)
- epinastine - ophthalmic, Elestat
- Side Effects of Solu-Cortef (hydrocortisone)
- Symjepi (epinephrine)
- propylene glycol/polyethylene glycol gel - nasal, Rhinaris
- Grastek
- Claritin
- Claritin D
- Ragwitek
- Nasacort AQ
- Oralair
- Clarinex-D 24hr
- Adrenaclick
- Zetonna
- Intal
- Allegra
- Ana-Kit
- Orapred ODT
- Nasalide
- Allegra-D
- Nasonex
- Allegra-D 24 Hour
- Fluorometholone Forte
- Elocon
- Clarinex-D 12hr
- Rhinocort Aqua
- Zyrtec-D
- Pediapred
- Nasalcrom
- Naphcon A
- Prednisolone
- Optivar
- House Dust Mite
- Azmacort
- Clemastine Fumarate Syrup
- Singulair
- Elestat
- Veramyst
- Zyrtec
- Opticrom
- Patanase Nasal Spray
- Sudafed
- Polmon
- Flovent Diskus
- Flovent HFA
- Serevent Diskus
- Astepro
- Triamcinolone Lotion
- Flovent
- AllerNaze
- Phenergan-Codeine
- Proventil
- Benadryl Injection
- Triamcinolone Ointment
- Triamcinolone Cream
- Epipen
- Beconase-AQ
- Beconase
- Xyzal
- Deltasone
- Vistaril
- Flonase
- Astelin
- Atarax
- Phenergan
- Benadryl
- Medrol
- Bepreve
- Clarinex
- Phenergan Vc
- Omnaris
Prevention & Wellness
- Is Your Smartphone a Haven for Allergens?
- Severe Food Allergies Can Traumatize Kids, But New Program Helps Ease Fears
- Get Ready for Those Fall Allergies
- Back to School: Keeping Kids Safe From Dangerous Food Allergies
- Stay Independent of Asthma, Allergies This July 4th
- Asthma, Allergies Raise Heart Risks, Too
- Worsening Allergy Seasons: Is Climate Change to Blame?
- As Climate Change Worsens Allergy Season, Tips on How to Cope
- Fewer Rainy Days Are Bringing Earlier Springs
- Allergy Season Is Near: Be Prepared
- Sudden Reaction to a Food? It Could Be Adult-Onset Allergy
- Poor Labeling Dangerous to People With Sesame Allergy
- Rain or Shine, Allergies Are Tough. What's the Link to Weather?
- Rising Ragweed Allergies Cause COVID Confusion
- Is It COVID or Seasonal Allergies?
- Is It Allergies or COVID? How to Tell the Difference
- Allergy Season May Up COVID Risk
- Fall Allergies or COVID-19? Know Your Symptoms
- Sterilizers, Disinfectant Devices, and Air Purifiers for Coronavirus
- Some U.S. Workers Are Bringing Toxins Home to Their Kids
- Do Heavier Babies Have More Food Allergies, Eczema?
- Peanut Allergy Treatment Moves Toward FDA Approval
- Happy, Healthy, Valentine!
- The Best Mattress for a Good Night's Sleep
- Dust Mite
- The Truth About Probiotics and Your Gut
- Snuggle Up With the Perfect Pillow
- Is the H1N1 Swine Flu Vaccine Safe?
- Common Cold: Too Sick to Work?
- Tackling Toddler Sleep Problems
- Protecting Your Eyes During Allergy Season
- Pollen Allergy
- Allergy: It's Springtime...What's in the Air
- Omnaris (Cirlesonide)
- Blood Tests for Allergies
- Mold Allergies
- Egg Allergy
- Shellfish Allergy
- Allergies and Carpet
- Allergy: Specific References
- Allergies-Asthma Organizations
- Cold, or Seasonal Allergies?
- Allergy Shots: Underused Treatment?
- Air Pollution Stunts Kids Lungs
- FDA Approves OTC Claritin
- Drug Reactions
- Seasonal Molds - The Facts
- Molds - Where Do They Grow?
- Animal Allergy, The Facts
- Allergies: The Nose - Friend & Foe
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