What should you know about Grover's rash?

Small red, pink, or skin-coloured bumps may appear across the chest, upper back, or abdomen. Heat, sweating, friction, and dry skin can make the itch more troublesome. Some people have short flares, while others have recurring symptoms.

A clinician may diagnose it from the distribution and surface of the rash, but several conditions can resemble it. Atopic dermatitis can itch and become dry; contact dermatitis follows exposure to an irritant or allergen; psoriasis may form thicker, scaly plaques; and infections such as ringworm or scabies need different treatment. A new medicine can also trigger a drug rash.

Keep the skin cool and dry, wear loose breathable clothing, and shower with lukewarm water. Use a fragrance-free cleanser and moisturiser, and avoid scrubbing, picking, fragranced products, and oily layers that trap heat. A pharmacist or clinician can advise whether a short course of an anti-inflammatory cream or an anti-itch treatment fits your skin and medical history.

Arrange an appointment if the rash keeps returning, spreads beyond the trunk, or does not improve with gentle care. Photographing a flare and noting heat, sweating, products, and medicines can help the assessment.

Seek prompt medical advice for rapidly spreading redness, warmth, pus, fever, significant pain, facial swelling, or a rash involving the eyes or mouth. Emergency help is needed for breathing difficulty, faintness, or swelling of the lips or tongue.

Does the pattern fit Grover's rash, or should we test for infection or another dermatitis? Which products should I stop? What treatment is suitable for my skin, and how should I use it during a flare?