NHS Issues Heat Rash Guidance Amid Ongoing Heatwave
As the UK experiences its 12th consecutive day with temperatures reaching at least 30°C, the NHS has outlined the signs of heat rash, also known as prickly heat, and when to seek medical attention. While bothersome, heat rash is typically harmless and clears up on its own within several days, according to NHS guidance.
Common Symptoms of Heat Rash
Tell-tale signs include tiny, raised bumps accompanied by slight swelling and an irritating "prickly" sensation. The rash appears red on white skin but may be more difficult to detect on brown or black skin. Symptoms are generally identical in both adults and children. The rash can emerge anywhere on the body and is not contagious.
How to Manage Heat Rash at Home
To prevent sweating and aggravating the condition, the NHS advises keeping the skin cool. This can be achieved by drinking plenty of fluids, taking cool baths or showers, wearing loose cotton clothing, and using lightweight bedding. If the rash is uncomfortable, a dampened cloth or wrapped ice pack can be applied to the affected area for up to 20 minutes. Gentle tapping or patting the rash helps avoid additional irritation, and fragranced shower gels and creams should be avoided.
Pharmacist and GP Advice
Pharmacists can recommend calamine lotion, antihistamine tablets, or hydrocortisone cream. The NHS advises consulting a GP if heat rash persists beyond several days, or if an infant develops a rash that causes concern. Infants frequently develop heat rash because they cannot regulate their body temperature as effectively as adults and older children. For those uncertain whether a child has heat rash, the NHS website provides images of other common rashes in babies and young children.



