2 doctors weighed in:

Does heat rash spread?

2 doctors weighed in
Dr. Keith Ramsey
Pediatrics - Adolescent Medicine
1 doctor agrees

In brief: Keep cooler

Heat rash usually resolves in a few days unless you continue to sweat too much.
So dress in cooler clothes or remove a layer of clothes, blankets, etc. Try not to use any topical creams or ointments that can also hold in heat. Keep cooler and the rash should go away on its own. Cool water will feel good on the rash. Solarcaine gel would help with comfort also.

In brief: Keep cooler

Heat rash usually resolves in a few days unless you continue to sweat too much.
So dress in cooler clothes or remove a layer of clothes, blankets, etc. Try not to use any topical creams or ointments that can also hold in heat. Keep cooler and the rash should go away on its own. Cool water will feel good on the rash. Solarcaine gel would help with comfort also.
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