Babies most often experience heat rash in their armpits, neck, groin, thighs and bum. Adults may develop heat rash in all ...

“Heat rash is most common in hot, humid conditions,” Dr Babamiri explains. “It often affects areas of the body where skin folds or clothing can cause friction, such as the neck, armpits and ...

When sweat accumulates and becomes trapped under the skin, heat rash can develop in body areas such as the neck, back, chest, ...