What causes chronic hives?

What causes chronic hives?

For most people with chronic hives, there’s no known cause. Rarely, medication allergies or food allergies cause chronic hives. The most common allergic cause is something you consume on a regular basis. Other types of allergies may also bring on chronic hives.

Some people develop chronic hives when their body changes temperature rapidly due to heat, cold or physical activity. Pressure on your skin from tight clothing may also cause the condition.