Drug Allergy Checklist
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Immunological Drug Reactions
A drug allergy occurs when your body's immune system mistakenly identifies a medication as a harmful foreign invader. The immune system releases antibodies and histamines, triggering inflammatory reactions.
Anaphylaxis: A Life-Threatening Emergency
Anaphylaxis is a severe, systemic allergic reaction that can develop within minutes of drug exposure. It causes airway constriction, swelling of the throat, a rapid drop in blood pressure (anaphylactic shock), and dizziness.
Managing Known Drug Allergies
If you experience a suspected drug allergy, document the reaction detail and contact your physician immediately. Ensure that your allergy is recorded at your pharmacy and on your medical chart to prevent future exposure.
When to Seek Urgent Medical Attention
- Swelling of the lips, tongue, face, or throat, or difficulty swallowing.
- Shortness of breath, wheezing, or a choking feeling.
- Severe dizziness, confusion, or loss of consciousness.
Frequently Asked Questions
A side effect is a known, predictable reaction (like nausea). A drug allergy is an immune system hypersensitivity reaction (like hives or facial swelling).
Penicillins, sulfa antibiotics, NSAIDs (like aspirin or ibuprofen), and anticonvulsants are common triggers of allergic hypersensitivity.
