A drug allergy is the abnormal reaction of your immune system to a medication. An allergic reaction will not occur on the first exposure to a substance. The first exposure allows the body to create antibodies and memory lymphocyte cells for the antigen. A drug allergy is different from an intolerance. A drug intolerance, which is often a milder, non-immune-mediated reaction, does not depend on prior exposure. Most people who believe they are allergic to aspirin are actually suffering from a drug intolerance.
Symptoms: Symptoms of a drug allergy can include: 1.Hives 2.Itching 3.Rash 4.Fever 5.Facial swelling 6.Shortness of breath 7.Anaphylaxis Diagnosis: If you have a history of reactions to different medications, or if you have a serious reaction to a drug, an allergist / immunologist, often referred to as an allergist, has specialized training and experience to diagnose the problem and help you develop a plan to protect you in the future.
Treament: Avoid triggers, Take antihistamines to control some symptoms, Seek immediate medical care if symptoms worsen or multiple symptoms occur together (anaphylaxis). Ask about alternatives to the drug that caused your allergic reaction. Ask about related drugs that you should avoid. Causes: The following are the short list of the most common drug allergens: Antibiotics Penicillin Sulfa drugs Tetracycline Analgesics Codeine Non-steroidal anti-inflammatory drugs (NSAIDs) Antiseizure Phenytoin Carbamazepine