Heat rash on a newborn’s face: what parents should know

Heat rash, also called prickly heat, can occur when sweat ducts are blocked by warmth and covering. On a newborn’s face it may look like tiny red or clear bumps, often after overheating. Newborn acne, irritation from saliva or milk, eczema, and infection can look similar. The colour, texture, speed of change, and whether the baby seems unwell all matter. Compare with general information about [Skin Bumps](/symptoms/skin-bumps/), [Skin Rash](/symptoms/skin-rash/), and [Heat Rash](/conditions/heat-rash/).

Keep the room comfortably cool and remove unnecessary hats, blankets, or extra layers indoors. Dress the newborn lightly and wash the face with plain lukewarm water. Pat dry without rubbing. Keep oils, thick ointments, powders, fragrances, and adult acne products away from the face unless a clinician recommends them. Do not put creams near the eyes, nose, or mouth without advice. [Emollient Therapy](/treatments/medical-dermatology/emollient-therapy/) may be useful for selected dry conditions, while [Topical Corticosteroids](/treatments/medical-dermatology/topical-corticosteroids/) require specific newborn guidance.

Because newborns can become unwell quickly, contact a clinician promptly if the baby has a fever, poor feeding, unusual sleepiness, breathing difficulty, or fewer wet nappies. Seek urgent help for purple or grey skin, facial swelling, blisters, rapidly spreading redness, pus, or swelling around the eyes. A rash that persists, changes, or does not improve after cooling should be examined rather than treated by trial and error. [Skin Redness](/symptoms/skin-redness/) elsewhere can be relevant.

Ask whether the bumps fit heat rash or a common newborn rash, which products should be avoided, and how to monitor temperature, feeding, and wet nappies. Tell the clinician when the rash began and whether the baby recently became warm or sweaty.