Drug Allergy
A drug allergy is an adverse immune system reaction to a medication, where the body's immune system mistakenly identifies the drug as a harmful substance. Unlike a drug side effect or intolerance, an allergy triggers an immune response that can range from mild skin reactions to severe, life-threatening conditions. Symptoms often appear shortly after taking the medication, but can sometimes be delayed.
Common Symptoms
- Skin rash or hives
- Itching
- Swelling (e.g., face, lips, throat)
- Difficulty breathing or wheezing
Clinical Sources
- Drug Allergy: Causes, Symptoms, Diagnosis & TreatmentCleveland Clinic
Diagnostic Lab Tests
Tests commonly used to diagnose or monitor Drug Allergy:
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