Find out what causes hives and how to treat them.

Sometimes the hairs cause hives in those who handle the spiders.

Most drug allergies cause minor skin rashes and hives.

For example, aspirin can cause nonallergic hives or trigger asthma.

The thought of removing even my shirt in front of Joe was enough to cause hives.

In some cases, anaphylaxis may have mild symptoms, causing only hives and itching.

It can cause symptoms such as itching, hives, and swelling of the tongue, throat, or other body parts.

But they can live long enough on humans to cause itchy hives or raised bumps that last a few days.

Tartrazine causes hives in less than 0.01% of those exposed to it.

They are particularly aggressive during the full and late summer and the sting causes painful hives.