About 1% to 2% of people in the U.S. have a peanut allergy. Symptoms and signs of a peanut allergy include rash, hives, redness, and itching. Severe reactions may cause difficulty breathing, nausea, decreased blood pressure, lightheadedness, and behavioral changes. People with a peanut allergy should carry an epinephrine auto-injector with them at all times.Read more: Peanut Allergy Article
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Related Disease Conditions
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.
Hives (Urticaria & Angioedema)
Hives, also called urticaria, is a raised, itchy area of skin that is usually a sign of an allergic reaction. The allergy may be to food or medications, but usually the cause of the allergy (the allergen) is unknown.
Itch (Itching or Pruritus)
Itching can be a common problem. Itches can be localized or generalized. There are many causes of itching to include: 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.
Pregnancy (Week by Week, Trimesters)
Signs and symptoms of pregnancy vary by stage (trimester). The earliest pregnancy symptom is typically a missed period, but others include breast swelling and tenderness, nausea and sometimes vomiting, fatigue, and bloating. Second trimester symptoms include backache, weight gain, itching, and possible stretch marks. Third trimester symptoms are additional weight gain, heartburn, hemorrhoids, swelling of the ankles, fingers, and face, breast tenderness, and trouble sleeping. Eating a healthy diet, getting a moderate amount of exercise, also are recommended for a healthy pregnancy. Information about the week by week growth of your baby in the womb are provided.
Diarrhea is a change is the frequency and looseness of bowel movements. Symptoms associated with diarrhea are cramping, abdominal pain, and the sensation of rectal urgency. Causes of diarrhea include viral, bacterial, or parasite infection, gastroenteritis, food poisoning, and drugs. Absorbents and anti-motility medications are used to treat diarrhea.
Dizziness is a symptom that often applies to a variety of sensations including lightheadedness and vertigo. Causes of dizziness include low blood pressure, heart problems, anemia, dehydration, and other medical conditions. Treatment of dizziness depends on the cause.
Nausea and Vomiting (Causes, Natural Remedies, Diet, Medication)
Nausea is an uneasiness of the stomach that often precedes vomiting. Nausea and vomiting are not diseases, but they are symptoms of many conditions. There are numerous cases of nausea and vomiting. Some causes may not require medical treatment, for example, motion sickness, and other causes may require medical treatment by a doctor, for example, heart attack, lung infections, bronchitis, and pneumonia. Some causes of nausea and vomiting may be life threatening, for example, heart attack, abdominal obstruction, and cancers. Treatment of nausea and vomiting depends upon the cause.
Chronic cough is a cough that does not go away and is generally a symptom of another disorder such as asthma, allergic rhinitis, sinus infection, cigarette smoking, GERD, postnasal drip, bronchitis, pneumonia, medications, and less frequently tumors or other lung disease. Chronic cough treatment is based on the cause, but may be soothed natural and home remedies.
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.
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.
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 food allergy, latex allergy, allergy to insect or but stings/bites, asthma, or other materials or conditions. Symptoms include flushing, itching, hives, anxiety, 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.
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.
The most common food allergies are to eggs, nuts, milk, peanuts, fish, shellfish, strawberries and tomatoes. Symptoms and signs 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.
What Are the Four 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.
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.
Local ResourcesFind a local Gastroenterologist in your town
Treatment & Diagnosis
Medications & Supplements
- Antihistamines (Oral)
- diphenhydramine, Benadryl
- EpiPen (epinephrine auto-injector)
- Beconase AQ (beclomethasone) Side Effects, Warnings, and Drug Interactions
- Side Effects of Xyzal (levocetirizine dihydrochloride)
- epinephrine injection (Auvi-Q)
- Side Effects of Periactin (cyproheptadine)
- Does Immunotherapy Work for Allergies?
Prevention & Wellness
- Pill Might Prevent Life-Threatening Allergic Reactions
- Pick Summer Camps Carefully When Your Kid Has Allergies, Asthma
- First Drug Approved for Treatment of Peanut Allergy in Children
- First Treatment for Peanut Allergy Approved by FDA
- Health Tip: Allergic Reaction First Aid
- Experimental Injection May Protect Against Peanut Allergy
- Check Those Halloween Treats So They're Safe to Eat
- Antihistamines Linked to Delayed Care for Severe Allergic Reaction: Study
- Halloween Can Be Frightful for Kids With Allergies, Asthma
- Health Tip: Living With Nut Allergy
- Do Heavier Babies Have More Food Allergies, Eczema?
- Peanut Allergy Treatment Moves Toward FDA Approval
- For Kids With Asthma, Allergies, New School Year Can Bring Flare-Ups
- Ruling Backs Airline Passengers With Food Allergies
- Is Peanut Allergy 'Immunotherapy' Causing More Harm Than Good?
- Food Allergies Can Strike at Any Age
- Some Batches of Ben & Jerry's Ice Cream Recalled for Undeclared Tree Nuts
- Preventing Kids' Food Allergies Starts in Infancy
- Immune-Targeted Treatment Might Help Prevent Peanut Allergy Crises
- Exposing Baby to Foods Early May Help Prevent Allergies
- Are 'Inactive' Ingredients in Your Drugs Really So Harmless?
- After Peanut Allergy Rx, Eating Small Bits of Peanut Might Help: Study
- Peanut Allergy Patch Shows Middling Results in Trial
- Get Ready for Summer Camp -- and Allergies
- 1 in 10 Adults Have Food Allergies, But Twice as Many Think They Do
- Nearly 1 in 12 U.S. Kids Has a Food Allergy
- New Treatment Could Be Breakthrough Against Peanut Allergy
- Can EpiPens Still Work After Freezing?
- Making Halloween Less Scary for Teens With Allergies, Asthma
- FDA Extends EpiPen Expiration Dates to Tackle Shortage
- 4 Ways to Protect Your Child From Allergic Reactions at School
- FDA Approves 1st Generic EpiPen
- Scientists Develop Blood Test for Peanut Allergy
- Peanut Allergy Vaccine Works -- in Mice
- Heath Tip: How to Introduce Your Child to Peanuts
- Treatment for Severe Peanut Allergy Shows Promise in Company Study
- Peanut Allergy Pill Works Four Years Later
- Nearly 4 Percent of Americans Suffer From Food Allergies
- New Guidelines Urge Early Intro to Peanut Products in High-Risk Infants
- Food Allergies Among Kids Vary by Race: Study
- Doctors Talk About Getting Peanuts Into a Baby's Diet, Which May Cut Allergies
- How to Introduce Your Baby to Food Containing Peanuts
- Skin Patch May Help With Peanut Allergy
- Early Introduction of Eggs, Peanuts May Cut Kids' Allergy Risk: Study
- The True Cost of EpiPen Coupons
- Peanut Allergy Treatment: The Earlier in Childhood, the Better
- Supervised Exposure Therapy for Peanut Allergy Lasts, Study Finds
- Parents Often Ill-Informed About Food-Allergy Emergencies
- Medical Groups Endorse Early Exposure to Peanut Products for High-Risk Infants
- Many Kids With Asthma Also Sensitive to Peanuts: Study
- Peanut Allergy Exposure Occurs Most Often at Home, Study Says