When you have allergies, your immune system mistakenly identifies a particular allergen such as pet dander or pollen as harmful. This triggers an immune system reaction that causes your allergy symptoms. The reaction may involve your skin, sinuses, airways or digestive system.
An ear, nose, and throat specialist (ENT) can help determine which substances are causing your discomfort. He or she will develop a management plan that will help make life more enjoyable.
Types of allergies
We've provided guides to several types of allergies:
Diagnosis, treatments and tips: