What is the first treatment tried for heat rash?

Heat rash, also called miliaria or prickly heat, develops when sweat ducts become blocked and sweat irritates the skin. It often appears in warm, humid conditions or under tight clothing, with small itchy or prickling bumps in areas where sweat collects. Removing heat and moisture addresses the trigger. Thick, greasy products can trap more heat on some rashes, so product choice matters.

Move to a cooler environment, wear loose breathable clothing, and take cool showers or use a cool damp cloth. Pat the skin dry and avoid scratching, which can break the surface. Pause fragranced products and heavy ointments on the affected area unless a clinician recommends them. If dryness remains after the rash settles, a light emollient may be appropriate. A topical corticosteroid should only be used when advised for the particular rash.

Seek medical advice if the rash does not improve after cooling measures, keeps returning, or is difficult to distinguish from an infection or allergy. Get prompt care for fever, pus, increasing pain, spreading redness, marked swelling, or a person who appears unwell. Babies and people with significant medical conditions may need earlier assessment when a rash follows overheating.

Ask whether the appearance fits heat rash, which products are suitable for the affected area, and how to prevent repeat episodes in hot conditions. Ask whether a topical corticosteroid is appropriate if itching remains and when review is needed.