In some people exposure to sunlight can bring on a rash which is commonly referred to as 'prickly heat' or 'heat rash'. The medical term for this reaction is 'photosensitivity'. Certain factors ...

We asked a dermatologist to explain what causes prickly heat and how to ... discomfort and soothe the rash. “Over-the-counter creams and lotions, such as calamine lotion or hydrocortisone ...

A prickly, burning or itchy sensation may ... use ointments such as calamine lotion to treat the symptoms of heat rash. This ...