Causes range from a heat rash to health conditions like psoriasis ... and may come and go for many years. Treatments for arm rashes will depend on the underlying cause and severity of the rash.

In newborns, the rash may appear as thin blisters or tiny water blisters on the face, trunk, and arms. This article will cover what heat rash looks like, finding immediate relief, prevention ...

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 ...

Sweat is unable to get through the pores of the skin, which becomes irritated and causes a rash to develop. There are different severities of heat rash. The mildest and most common types look like ...