The Open Dictionary

heat rash

noun

UK/ˈhiːt ˌræʃ/
US/ˈhiːt ˌræʃ/

Definitions of heat rash noun

  1. CountableUncountable

    A skin condition characterized by discomfort and the presence of red spots.

    • Babies are prone to developing heat rash in hot, humid weather.

    • Excessive sweating can lead to the development of heat rash.

    • Wearing loose cotton clothing can help prevent heat rash.