Heat-Related Symptoms
Anhidrosis is itself a symptom.
Exercise can increase the sweating response, by up to 1.2 liters per hour in athletes.
A lack of sweating may be localized, affecting only certain regions of the body, or generalized.
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The incidence of hypohidrosis or anhidrosis is currently unknown, and it’s thought that many cases go undiagnosed.
An estimate, however, may be made based on the incidence of heat-related events.
One study found that among soldiers who developed heat-related illness, 31% had hypohidrosis.
In some cases, a lack of sweating arises for unknown reasons, which is called “idiopathic.”
Congenital/Genetic Conditions
A number of congenital/genetic conditions have been associated with either hypohidrosis or anhidrosis.
They include the following:
Additional causes can include burn injuries or brain tumors.
Idiopathic
Idiopathic acquired anhidrosis has no obvious cause.
It is broken down into three types based on where the problem occurs.
With AIGA, people are quite susceptible to heatstroke.
Oral corticosteroids appear to be quite effective for many people, though the condition frequently recurs.
It is important that medications such as anticholinergics be discontinued before testing is performed.
Indoors, use air conditioning to stay comfortable.
Stay well hydrated and use a spray bottle to mist yourself.
Loose-fitting, lightweight clothing is usually the most comfortable.
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Johns Hopkins Medicine.Heat-Related Illnesses (Heat Cramps, Heat Exhaustion, Heat Stroke).
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