Different Types of Heat Rash

A superficial form may cause very small clear or skin-coloured bumps with little discomfort. A more inflamed form causes red, prickly, itchy bumps, often where clothing rubs or skin folds touch. A deeper form can produce firmer, flesh-coloured bumps and may feel tender. Heat rash commonly affects areas covered by clothing, but a similar-looking [Skin Rash](/symptoms/skin-rash/) or other cause of [Skin Redness](/symptoms/skin-redness/) can need different care.

Move to a cooler environment, wear loose breathable clothing, and keep the affected skin dry. Use cool compresses and avoid heavy ointments, perfumed products, and vigorous rubbing if they trap heat or irritate the area. Gentle [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) may help dryness, while a clinician may consider [Topical Corticosteroids](/treatments/medical-dermatology/topical-corticosteroids/) for selected inflamed cases.

Seek medical advice if the rash does not settle after cooling, keeps returning, becomes painful, or develops pus, crusting, or spreading redness. Get urgent help if heat exposure is accompanied by confusion, fainting, severe weakness, or trouble breathing; these symptoms can signal a heat-related emergency rather than a simple rash.

Ask whether the bumps fit heat rash or another condition, which products should be stopped, whether medication is appropriate, and how to prevent recurrence during hot weather, exercise, or prolonged sweating.