Hives and angioedema are caused by inflammation in the skin. In some cases, hives and angioedema are triggered when certain cells (mast cells) release histamine and other chemicals into your bloodstre

Allergy Being allergic to medications, nuts, eggs, berries, insect bites, jelly fish, can release the batch of hives. If you are exposed to animal dander it may also cause an allergic reaction. Wea

The most common skin allergy triggers that cause hives include: • Medication such as antibiotics, codeine, penicillin, sulfa, anticonvulsant drugs, phenobarbital, and aspirin • Foods like s

Symptoms of ordinary hives Ordinary hives flare up suddenly and usually for no specific reason. Welts appear, often in several places. They flare, itch, swell, and go away in a matter of minutes to