Dizziness and Hives: Causes, Conditions & When to See a Doctor

Anaphylaxis is a severe, life-threatening allergic reaction requiring immediate emergency treatment with epinephrine. Common triggers include foods, insect stings, medications, and latex.

Food allergies are immune system reactions that occur after eating a specific food. Even trace amounts can trigger signs and symptoms, including digestive problems, hives, or swollen airways.

Mast cell activation syndrome causes recurring episodes of anaphylaxis-like symptoms due to inappropriate mast cell activation. Diagnosis requires demonstration of abnormal mediator release.