Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.

Definition of Allergen

Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026

Allergen: A substance that can cause an allergic reaction. Common allergens include ragweed pollen, animal dander, and mold.

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