Editor: V. Dimov, M.D., Allergist/Immunologist, Cleveland Clinic Florida, Clinical Associate Professor, FAU Charles E. Schmidt College of Medicine
Adverse drug reactions affect up to 10% of people. When drug reactions resembling allergy happen, they are called drug hypersensitivity reactions (DHRs). Drug hypersensitivity reactions may be allergic or nonallergic. Drug allergies are drug hypersensitivity reactions caused by the immune system.
Hives (urticaria) and angioedema
Drug allergy management in 5 steps (click to enlarge the image).
Classification of adverse drug reactions (ADR) (click to enlarge the image).
Mnemonic for classification of adverse drug reactions: "SOAP III" (click to enlarge the image).
What to expect when visiting an allergy clinic
Current allergy skin tests are virtually painless. This video by Dr. Bassett, a board-certified allergist from New York City, shows what to expect when visiting an allergy clinic for diagnosis and treatment:
Question to ask if a patient has a suspected episode of anaphylaxis
Image source: Wikipedia, GNU Free Documentation License.