Overview
Types of
Symptoms
Medications
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Overview
Types of
Symptoms
Medications
Procedures
Other treatments
Tests
Related questions
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Allergies
Allergies occur when your immune system is triggered by envirionmental factors it should ignore--for example, pollen in the air, or dander on a cat or dog--and creates cells to fight against them. An allergic reaction typically causes itching, congestion, or drainage, and can be very serious.
How long it usually lasts:
Chronic (lasts years to lifelong)
Symptoms
Medications
Ratings show how effective doctors think these medications are at treating Allergies
Procedures
Ratings show how effective doctors think these procedures are at treating Allergies
Other treatments
Tests
Related questions
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