Hives, also known as urticaria ... increased heat or tight-fitting clothes around the area of your stress rash. "Heat is known to be an aggravant, as well as pressure," Dr. Nazarian said.

heat, cold, and pressure on the skin." Hives are actually a type of rash. However, not all rashes are hives. "Rashes occur on ...

A hives rash, also called urticaria ... Or, if it appears on the hands, it may look cracked as if the skin is extremely dry. Heat rashes look like small flesh-colored or red bumps in the skin ...