What to know about heat rash in children

Heat rash, also called prickly heat or miliaria, develops when sweat ducts become blocked and sweat irritates the nearby skin. It may look like tiny red bumps, clear fluid-filled spots, or rough patches. Children may scratch because the area feels itchy, prickly, or stinging. Common sites include the neck, upper chest, back, hairline, and skin folds, especially after hot weather, exercise, fever, or heavy clothing.

Move your child to a cool space and gently wash the affected skin with lukewarm water. Pat dry rather than rubbing, then allow the skin to air whenever practical. Dress your child in light, loose clothing and change damp clothes promptly. Avoid thick ointments, oily products, and fragranced creams that can further block sweat ducts. Keep fingernails short to reduce skin damage from scratching. A cool, clean cloth can soothe discomfort for short periods.

Arrange medical advice if the rash spreads, becomes painful, develops pus or crusting, or does not start settling after cooling and gentle care. Seek urgent help if your child has trouble breathing, unusual sleepiness, confusion, repeated vomiting, or signs of overheating such as hot skin and a high temperature. A clinician can distinguish heat rash from infection, eczema, or another childhood rash.

Could this be heat rash or another condition? Which products are suitable for my child’s skin? What signs would mean the rash is infected or related to overheating?