Heat rash is uncomfortable but usually harmless.
It should clear up on its own after a few days.
Check if you have heat rash
The symptoms of heat rash are:
small red spots
an itchy, prickly feeling
redness and mild swelling
The symptoms are often the same in adults and children.
It can appear anywhere on the body and spread, but it's not infectious to other people.
How you can treat or prevent heat rash yourself
The main thing to do is keep your skin cool so you don't sweat and irritate the rash.
To keep your skin cool
wear loose cotton clothing
use lightweight bedding
take cool baths or showers
drink plenty of fluid to avoid dehydration
To calm the itching or prickly rash
apply something cold, such as a damp cloth or ice pack (wrapped in a tea towel) for no more than 20 minutes
tap or pat the rash instead of scratching it
don't use perfumed shower gels or creams
A pharmacist can help with heat rash
Speak to a pharmacist about heat rash. They can give advice and suggest the best treatment to use.
A pharmacist might recommend:
hydrocortisone cream – though not for children under 10 or pregnant women as they need to get advice from a doctor before using this treatment
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Causes of heat rash
Heat rash is usually caused by excessive sweating.
Sweat glands get blocked and the trapped sweat leads to a rash developing a few days later.
Babies often get it because they can't control their temperature as well as adults and children can.