Move to a cooler, shaded, or air-conditioned area
Keep the skin cool with cool (not cold) compresses for 10–15 minutes at a time
Gently wash with a mild, fragrance-free cleanser and lukewarm water
Pat the area dry; avoid rubbing
Wear loose, breathable clothing (cotton or moisture-wicking fabrics)
Avoid heavy creams or occlusive ointments that trap heat
Use light, fragrance-free moisturizer if skin is dry or irritated
If itching or discomfort is significant, consider an over-the-counter oral antihistamine (per label directions)
For itch relief, consider an over-the-counter hydrocortisone 1% cream thinly on affected areas for up to 7 days (avoid face/groin unless directed)
If there are small blisters or skin breakdown, keep the area clean and dry
Avoid sweating triggers: hot tubs, saunas, vigorous exercise in heat, and prolonged sun exposure
Use a fan and stay hydrated
Seek medical care urgently if fever develops, rash rapidly spreads, there is severe pain, pus, honey-colored crusting, or trouble breathing
Seek medical care if rash does not improve within 2–3 days or keeps recurring despite cooling and dryness measures