Is it simply heat rash, or could it be a more persistent skin condition like eczema? Learn how to spot the difference.

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.

Hives, also known as urticaria, are raised, itchy welts on your skin that occur due to an allergen. The reaction is ...

Although there is some overlap, the triggers of hives and other rashes can differ. For instance, contact dermatitis causes rash due to irritation, heat, or direct physical contact with an allergen ...