Drug Allergy Topic Guide
Drug Allergy: Drug allergies may result in rashes and other symptoms. Several classes of medications may be associated with drug allergy. Treatment may include antihistamines and other medications. Rarely, blood tests and other tests are used to diagnose drug allergies. Avoidance is the primary strategy to avoid drug allergy.
Hives and Angioedema Hives are a sudden allergic skin reaction. Hives are raised reddish bumps that cause severe itching. Angioedema is similar to hives but the welts are larger and involve a deeper layer in the skin. Allergies, insect stings and bites, stress, exercise, and infections are common causes of hives and angioedema. In mild cases, no treatment is needed. Severe reactions should be treated by a health care professional.
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