They go away by themselves. If your heat rash doesnt go away after 3 or 4 days, or if it seems to be getting worse, call your doctor. In some cases, heat rash may be caused by an infection.
How do you get rid of sweat rash fast?
Bathe or shower in cool water with nondrying soap, then let your skin air-dry instead of toweling off. Use calamine lotion or cool compresses to calm itchy, irritated skin. Avoid using creams and ointments that contain petroleum or mineral oil, which can block pores further.
How long does a heat rash take to clear up?
What to Expect: With treatment, heat rash will clear up in 2 to 3 days.
What causes a sweat rash?
Sweat rash is caused by moist areas of skin rubbing together. The main causes of sweat rash include moisture, heat, lack of air circulation and friction between skin folds. Additionally, sweat, urine and faeces can make this condition worse.