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Positive reaction to allergen

Allergic reaction is a sensitivity to a specific substance, called an allergen, that is contacted through the skin, inhaled into the lungs, swallowed or injected. The body's reaction to an allergen can be mild, such as a localized rash, or life-threatening, such as anaphylactic shock.

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·As a Disease/Condition

Pollen

·As a Cause

Allergic Conjunctivitis

·As a Risk Factor

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