A stress rash is characterized by hives or welts on the skin. While they usually appear on the face, neck, chest, and arms, the bumps can break out anywhere including on the thighs. It's not exactly ...
A pimply rash on your buttocks can have many causes. It may be the result of the skin being irritated by tight clothes or bicycle riding. It may also be due to an allergic reaction, chemical irritant, ...