Hives that occur spontaneously for more than 6 weeks usually indicate physical urticaria, while cases that occur for less than 6 weeks may indicate other types of urticaria.

The short answer? No, hives are not contagious. "Some people think hives are contagious, but they're not,” says Chiang. “You can't catch hives from someone else, even if someone's hives are triggered ...

There are many different types of hives -- urticaria -- with many different causes. In most cases, these puffy, red, or skin-colored bumps and wheals appear suddenly due to an allergic reaction to ...

This type of hives is the most common kind in children. Two other types of hives -- "chronic spontaneous urticaria" and "chronic idiopathic urticaria" -- come and go for 6 weeks or longer.

This type of hives is the most common kind in children. Two other types of hives -- "chronic spontaneous urticaria" and "chronic idiopathic urticaria" -- come and go for 6 weeks or longer.