Heat rash might look like bumps or fluid-filled blisters.
Previous Next 3 of 8 Heat rash (miliaria)

Heat rash (miliaria) occurs when the flow of sweat is obstructed, usually due to hot, humid weather or overdressing.

Prickly heat (miliaria rubra) (A) is a type of heat rash that appears as clusters of small bumps that produce a pricking or stinging sensation. The bumps range in color from red on white skin to gray or white on brown and Black skin. Miliaria crystalline (B), another type of heat rash, appears as clear, fluid-filled bumps.

Heat rash isn't serious and usually resolves when the affected skin cools. Cool compresses or a cool bath might help. You can prevent heat rash by wearing loose, lightweight clothing and avoiding excessive heat and humidity.

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See more Multimedia Oct. 13, 2022