What Should You Do If Your Baby Develops Heat Rash in Summer?

During summer, high temperatures and humidity levels can lead to heat rash (miliaria) in infants—especially when they engage in vigorous activity and sweat heavily, yet poor skin hygiene causes pores to become clogged and sweat evaporation to be impaired. Affected areas may become itchy and painful, causing the baby to cry. So, what should parents do if their baby develops heat rash in summer?

How to Manage Heat Rash in Babies During Summer

Heat rash in babies during summer can be alleviated by applying calamine powder or topical medications. When a baby develops heat rash, frequent warm (not hot) baths are recommended. After bathing, gently pat the baby’s skin dry and apply calamine powder. If itching or other symptoms occur, cooling agents such as calamine lotion or diluted peppermint oil may provide relief. However, if the rash is severe—accompanied by skin ulcers or signs of infection—the baby should be promptly taken to a hospital for evaluation and treatment. Under a physician’s guidance, topical antihistaminic or low-potency corticosteroid ointments may be prescribed.

Babies with heat rash typically develop raised, red papules on the skin, often accompanied by itching and sometimes low-grade fever. Diagnosis is usually made clinically through direct physical examination. Heat rash is common in infants, especially in environments with high indoor temperature and excessive humidity. Once diagnosed, maintaining meticulous skin cleanliness and hygiene is essential.

We recommend keeping the baby’s skin clean and dry, choosing soft, breathable clothing for close contact with the skin, and paying close attention to the baby’s personal hygiene. We hope this information is helpful to you.