Top definition
A condition causing a person's skin to sting intensively during contact with the sun or another heat source.

This condition is developed when a person's skin is not used to contact with the sun.
Person 1: Hey, Joe apparently has heat Rash.

Person 2: Shut-in confirmed.
by Kizaru March 24, 2014
Get the mug
Get a heat rash mug for your dog Julia.