It was medically reviewed by Debra Sullivan, Ph.D., MSN, R.N., CNE, COI You may be able to relieve heat rash with products like hydrocortisone cream and antihistamines. Some home remedies ...

Heat rash — also known as prickly heat, summer rash, or wildfire rash — occurs when the sweat gland ducts become blocked with sweat. Cooling or gently patting the rash may provide some relief.

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 ...