Heat rash side effects and possible complications

The condition itself may produce red or skin-coloured bumps, stinging, itch, and tenderness where sweat collects. Scratching can cause grazes, bleeding, crusting, or increased soreness. Persistent dampness and friction may keep the irritation active. Those symptoms can overlap with other [Skin Rash](/symptoms/skin-rash/) causes, so appearance and timing matter more than a single symptom.

Cool the area, wash gently, pat dry, and choose loose breathable clothing. Keep nails short and use a cool cloth instead of scratching. Avoid fragranced sprays and greasy layers that trap heat. If the skin is dry after the flare, ask a professional whether [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) fits the affected area. Do not share creams or use steroid treatment without suitable advice.

Seek medical advice if there is pus, yellow crusting, increasing warmth, swelling, fever, worsening pain, or redness that continues to spread. Review is also sensible when symptoms keep returning despite cooling measures. Emergency care is needed for trouble breathing, sudden facial swelling, confusion, or collapse. [Skin Redness](/symptoms/skin-redness/) and [Skin Bumps](/symptoms/skin-bumps/) have other possible causes.

Ask which symptoms are expected, whether the skin looks infected, and which products are safe on the affected site. Tell the clinician about scratching, new products, recent outdoor exposure, and any treatment already applied.