Heat rash on holiday: how to manage it

A hot climate, long outdoor days, swimming, backpacks, close-fitting swimwear, and repeated sunscreen application can keep skin warm or occluded. The rash may appear on the neck, chest, back, waist, thighs, or other covered areas and can itch more after activity. Not every holiday rash is heat rash: sunburn, contact reactions, insect bites, eczema, and infection can look similar. Read about Heat Rash and related symptoms including Skin Bumps, Skin Rash, and Skin Redness.

Take cooling breaks indoors or in shade, wear loose breathable clothing, and change out of damp swimwear promptly. Rinse away salt, chlorine, sweat, and sunscreen residue with gentle cleanser, then pat dry. Keep the room cool when possible and avoid scratching or thick oily products over the bumps. A cool cloth may soothe prickling. For dry surrounding skin, Emollient Therapy may be useful. Ask a clinician before using Topical Corticosteroids, particularly on thin or folded skin.

Contact a local clinician if the rash is worsening, persists after cooling, recurs without heat exposure, or makes sleep difficult. Seek prompt care for fever, significant pain, pus, yellow crusting, rapidly spreading redness, or swelling. Get emergency help for breathing difficulty, facial swelling, faintness, or widespread blistering. Do not delay assessment because you are travelling.

Ask which sunscreen and cleanser suit your skin, how to protect a rash while swimming, and whether a prescribed medicine is appropriate for the affected body site. Describe the climate, clothing, products, bites, and timing of the eruption.