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. Read more: Drug Allergy (Medication Allergy) Article
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Related Disease Conditions
How to Stop Anal Itching
Anal itching is the irritation of the skin at the exit of the rectum, known as the anus, accompanied by the desire to scratch. Causes include everything from irritating foods we eat, to certain diseases, and infections. Treatment options include over-the-counter medications, using moist pads, and gentle cleaning and drying of the anus.
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.
Chronic Rhinitis and Post-Nasal Drip
Chronic rhinitis and post-nasal drip symptoms include an itchy, runny nose, sneezing, itchy ears, eyes, and throat. Seasonal allergic rhinitis (also called hay fever) usually is caused by pollen in the air. Perennial allergic rhinitis is a type of chronic rhinitis and is a year-round problem, often caused by indoor allergens, such as dust, animal dander, and pollens that may exist at the time. Treatment of chronic rhinitis and post nasal drip are dependent upon the type of rhinitis condition.
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.
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.
Fainting, also referred to as blacking out, syncope, or temporary loss of consciousness has many causes. Often a person will have signs or symptoms prior to the fainting episode. Diagnosis and treatment depends upon the cause of the fainting or syncope episode.
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.
Nausea and Vomiting
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.
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.
Anxiety is a feeling of apprehension and fear characterized by symptoms such as trouble concentrating, headaches, sleep problems, and irritability. Anxiety disorders are serious medical illnesses that affect approximately 19 million American adults. Treatment for anxiety may incorporate medications and psychotherapy.
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.
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.
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.
What Causes Angioedema?
What is angioedema? Angioedema is a form of swelling that occurs under the skin. Learn what causes angioedema, its signs and symptoms, how doctors diagnose it, when to see a doctor, and ways to treat this condition.
Local ResourcesFind a local Asthma & Allergy Specialist in your town
Treatment & Diagnosis
Medications & Supplements
- Penicillin (Antibiotics)
- Bronchodilators (Drug Class)
- Insulin for Diabetes Treatment (Types, Side Effects, and Preparations)
- Types of Insulin Medications for Diabetes
- Drug Interactions
- Antihistamine Shots (Injections)
- loratadine, Claritin, Claritin RediTabs, Alavert, Claritin Hives Relief, Children's Claritin
- iodine, strong - oral
- EpiPen (epinephrine auto-injector)
- Does Immunotherapy Work for Allergies?
- Side Effects of Periactin (cyproheptadine)
- Quzyttir (cetirizine)
- epinephrine injection (Auvi-Q)
- Side Effects of Veramyst (fluticasone)
- Side Effects of Auvi-Q (auto-injectable epinephrine)
Prevention & Wellness
- Severe Allergic Reaction Extremely Rare With Pfizer COVID Vaccine: Study
- Allergists' Group Offers Guidelines on COVID-19 Vaccines
- Allergic Reactions to COVID Vaccines Are Rare, Resolved on Site: CDC
- Allergists Offer Reassurance on COVID Vaccine Safety
- Allergists' Group Updates Guidelines on COVID-19 Vaccines
- Allergists' Group Offers Advice on Pfizer COVID-19 Vaccine
- Many Cases of 'Penicillin Allergy' Might Be Mistaken
- Could You Be Allergic to Additives?
- Penicillin Allergy Less Common Than Thought: Study
- Heartburn Drugs Might Bring Allergy Woes
- Are 'Inactive' Ingredients in Your Drugs Really So Harmless?
- Testing for Penicillin Allergy May Cut 'Superbug' Infection Risk
- Penicillin Misconceptions May Raise Post-Op Infection Risk
- Say Goodbye to Allergy Misery in Spring
- Medicines Are Biggest Culprit in Fatal Allergic Reactions: Study
- Faster Drug Approvals Linked to Increased Safety Issues
- Internet Search History May Reveal Unknown Drug Side Effects
- Study: Allergies Need to Be Taken Seriously
- Health Tip: Reduce Your Risk of Adverse Drug Reactions
- Health Tip: Having an Allergy to Medication
- Kids' Penicillin Allergy May Not Signal Other Drug Reactions