Heat Rash (skin irritation caused by heat) information on MedicineNet.com

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Heat Rash (cont.)

What happens to the body as a result of exposure to extreme heat?
Who is at greatest risk for heat-related illness?
What is heat rash?
What does heat rash look like?
How is heat rash treated?
Can medications increase the risk of heat-related illness?
How effective are electric fans in preventing heat-related illness?
How can people protect their health when temperatures are extremely high?
How much should I drink during hot weather?
Should I take salt tablets during hot weather?
What is the best clothing for hot weather or a heat wave?
Patient Discussions: Heat Rash - Describe Your Experience
Heat Rash Glossary
Heat Rash Index

What does heat rash look like?

Heat rash looks like a red cluster of pimples or small blisters. It is more likely to occur on the neck and upper chest, in the groin, under the breasts, and in elbow creases.

How is heat rash treated?

The best treatment for heat rash is to provide a cooler, less humid environment. Keep the affected area dry. Dusting powder may be used to increase comfort, but avoid using ointments or creams-they keep the skin warm and moist and may make the condition worse.

Treating heat rash is simple and usually does not require medical assistance. Other heat-related problems such as heat stroke or heat exhaustion can be much more severe.

Can medications increase the risk of heat-related illness?

The risk for heat-related illness and death may increase among people using the following drugs: (1) psychotropics, which affect psychic function, behavior, or experience (e.g. haloperidol or chlorpromazine); (2) medications for Parkinson's disease, because they can inhibit perspiration; (3) tranquilizers such as phenothiazines, butyrophenones, and thiozanthenes; and (4) diuretic medications or "water pills" that affect fluid balance in the body.

How effective are electric fans in preventing heat-related illness?

Electric fans may provide comfort, but when the temperature is in the high 90s, fans will not prevent heat-related illness. Taking a cool shower or bath or moving to an air-conditioned place is a much better way to cool off. Air conditioning is the strongest protective factor against heat-related illness. Exposure to air conditioning for even a few hours a day will reduce the risk for heat-related illness. Consider visiting a shopping mall or public library for a few hours.