Extreme heat rash treatment: what to know

Heat Rash, also called prickly heat, develops when sweat ducts become blocked and sweat irritates the skin. It may cause small red or clear bumps, prickling, itching, or redness in skin folds and areas covered by clothing. Hot, humid conditions, exercise, fever, and occlusive fabrics can contribute.

A rash that is sharply painful, crusted, oozing, ring-shaped, or associated with facial swelling may have another cause. Skin bumps, Skin Rash, and Skin Redness describe symptoms that overlap with heat rash, so location and recent heat exposure help with identification.

Move to a cooler place, take a lukewarm shower, pat the skin dry, and wear loose breathable clothing. Keep affected folds dry and pause heavy exercise until the irritation calms. Avoid thick occlusive products, fragranced products, and scratching. A pharmacist or clinician can advise whether a soothing product or Emollient Therapy fits the affected area; Topical Corticosteroids should be used only with suitable guidance, particularly on thin skin or in children.

Seek medical advice if the rash is spreading, very painful, blistered, warm, swollen, crusted, or draining, or if you develop fever or feel unwell. Get urgent help for trouble breathing, swelling of the lips or tongue, confusion, faintness, or signs of severe overheating. Arrange a review when cooling measures do not improve the rash or when it keeps returning.

Ask whether the bumps fit Heat Rash, whether a medicine or infection could be involved, and which product is safe for the site. Ask how to prevent recurrence in hot weather or during exercise.