Hi
There is a common skin condition called hives or urticaria, which causes
red and sometimes itchy bumps
on your
skin. Hives can occur anywhere
on the body such as the trunk, arms, and legs. Hives are usually allergic (food, medication, cosmetics and insect stings) but may also be due to infections and stress. Many a times no specific cause for them is ever found.
Most cases are mild and resolve on their own. They usually go away on their own.