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3942 Do-you-have-heat-rash

Do you have heat rash?

Do you have heat rash?

A heat rash, also known as prickly heat or miliaria can affect both infants and adults during hot and humid weather. They usually develop when one's sweat ducts (pores) become blocked and perspiration is trapped under the skin. The rash appears as reddened skin with tiny blisters which is due to inflammation and often occurs in areas of tight clothing where air cannot circulate.

It's unclear as to why sweat glands become blocked, but there are factors that seem to play a role including: