A Side Effect Of A Certain Medication:
The heat rashes might be a side effect of some medications, which cause the clogging of sweat glands, and the normal process of sweating is no longer present in the people receiving those medications. Some of the medications that might be the culprit behind, causing heat rashes to include Clonidine and Catapres. Moreover, psychotropic medicines are also an indirect cause of developing heat rashes in the people who are using them. Psychotropic medicines affect mental functions and regulate the behaviors, which can cause a rise in the temperature of the body. The raise happening in the body temperature can result in causing excessive sweat production, which then increases the chances of getting heat rashes on normal winter days too.
Certain drugs that help in altering the fluid balance in the body, such as diuretic medications, tranquilizers, and water pills, greatly increase the tendency of the person to develop prickly heat. Some of the medications mentioned above can cause a great increase in sweat production as the body tends to maintain a fluid balance all the time. The increase in sweat production ultimately causes blockage of sweat gland ducts, which cause inflammation and itchy bumps on the skin.