Heat Rash - What Is It?

Heat rash is a fairly common complaint that can effect adults in the hot summer months but is more likely in children. It's other name is prickly heat or miliara rubra to give it it's medical term.

It happens when the sweat glands get blocked, excess moisture collects and causes irritation on the surface of the skin. It appears as small red blisters which can become puss filled and the skin becomes very itchy

In infants it most often appears in the nappy (diaper) area, which can become too hot and is aggravated by moisture. Clothing infants in too many layers in the summer months can cause the condition.

How To Prevent It

In order to prevent the occurrence of prickly heat you should avoid over activity during the hot weather as this will produce excessive sweating which may lead to the sweat glands getting blocked. Wear appropriate clothing for the weather made out of natural materials such as cotton or linen if possible and make sure they are not too restrictive to prevent the skin from over heating. The more that air can circulate around the skin the less likely you are to suffer from it.

Certain deodorants, anti-perspirants and perfumes can sometimes react with sunlight causing an allergic reaction, in which case discontinue use of the product immediately.

Treatment Of Heat Rash

Most cases of the rash heal themselves within a few days, in infants make sure they are in the shade, their skin can be cooled down with cold cloths or a cool bath. Calomine lotion or hydrocortisone cream may be used with your health professional's approval. Adults need to keep in the shade and can take cool showers to help sooth the skin. Gradually increase exposure to the sun after the skin has healed itself. If the rash does not go within three or four days consult your doctor.

This page is for information only and should not be construed as medical advice. Please consult a medical practitioner for expert help.

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