Heat rash (prickly heat)Overview
Heat rash, also called prickly heat, is a rash usually caused by excessive sweating.
Symptoms of heat rash include small, itchy red spots anywhere on the body.
You can ease heat rash by keeping your skin cool. A damp cloth, ice pack (wrapped in a tea towel) or medicines from a pharmacy can help any itchiness.
Heat rash can happen if your sweat glands become blocked and sweat gets trapped in them.
Page last reviewed: 09/01/2018
Next review due: 09/01/2021