When your skin is red, itchy, and irritated, it could be a rash or it might be hives. We spoke with experts to learn how to ...

Angioedema is a reaction that causes swelling beneath the skin and often affects the lips or eyes. It can be triggered by an allergy or infection and is sometimes accompanied by hives.

Symptoms of a severe allergic reaction can vary, but may include hives, a swollen throat or tongue, flushed skin, nausea, vomiting, dizziness, and more. For most people, a bee sting only produces ...