Granuloma annulare may cause a person to develop more than one rash. It can also cause patches that cover a large amount of the body. Experts largely do not know what causes this condition.

It can spread to other parts of your body, including your back ... Experts don’t know what causes a PUPPP rash, but it might be linked to stretch marks. One theory is that if your skin stretches ...

Causes of a butt rash include your skin coming into contact ... Skin problems can happen anywhere on your body, including on your butt. Some problems clear up on their own or with the help of ...