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Health Tip: Symptoms of a Drug Allergy

Signs that you're having a reaction

(HealthDay News) -- Some drugs cause unpleasant side effects in many people, including nausea, dizziness or fatigue.

But if you're allergic to a drug, you can have a reaction that ranges from mild to life-threatening. Penicillin and other antibiotics are among the most common causes of drug allergy.

The U.S. National Library of Medicine lists these warning signs of an allergic reaction to a medication:

• Hives.
• Skin rash.
• Itchiness of the skin or eyes.
• Wheezing or difficulty breathing.
• Swollen lips, eyes or tongue.