It most commonly affects young children and develops in the folds behind the knees and elbows, and on the hands, arms, face, and scalp. Heat rash usually improves on its own after cooling down or ...

Although it can appear anywhere on the body, heat rash often appears around skin folds, including: in the neck near the groin under the arms Heat rash occurs when excessive sweating blocks sweat ...

Have you ever wondered why some people struggle with heat rash every summer while others appear to navigate the hot weather with no issues at all? We asked a dermatologist to explain what causes ...

Medically reviewed by Susan Bard, MD An itchy rash with blisters can be caused by an allergic reaction; an autoimmune ...