Miliaria rubra is a type of heat rash or prickly heat that happens when sweat becomes trapped under the skin. Children tend to get it more than adults because their sweat glands are still developing.

Skin-picking disorder (dermatillomania or excoriation disorder) and autoimmune disorders often go together. With skin picking, you have a compulsive urge to pick, scratch, rub, pull, or scrape your ...

They also carry waste away from your organs and tissues. Petechiae sometimes appear in clusters and may look like a rash. If you have tiny red, purple, or brown spots on your skin, they could be ...

9. Inverse Psoriasis Another cause of an armpit rash that’s not an infection is psoriasis, a chronic autoimmune condition. One form of psoriasis is especially likely to show up on skin folds, ...

Photo: Collins The family of a restaurateur who “very likely” died from medication she received for a skin rash are suing the doctor who prescribed the treatment for alleged negligence.