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A thermoregulatory sweat test (TST) measures your ability to sweat in a special laboratory that has controlled temperature, humidity, and air flow regulation capabilities.
Thermoregulatory sweat test. You're coated with a powder that changes color when you sweat. While you lie in a chamber with a slowly increasing temperature, digital photos document the results as you begin to sweat.
If you sweat abnormally, a TST, along with other tests, can identify whether the dysfunction is in your peripheral or central nervous system and how severe it is. This test will help your doctor make a diagnosis and determine treatment options.
The thermoregulatory sweat test (TST) is a specific clinical test used to diagnose certain conditions that cause abnormal temperature regulation and defects in sweat production in the body.
The thermoregulatory sweat test involves applying alizarin red, corn starch, and sodium carbonate to the skin to identify hyperhidrotic areas. The patient is then placed in a heated chamber where normal thermoregulatory sweating is induced.
The thermoregulatory sweat test (TST) consists of giving a controlled heat and humidity stimulus to produce a generalized sweat response. The TST assesses the integrity of efferent sympathetic sudomotor pathways. The entire anterior body surface is tested for both pre- and post-ganglionic lesions.
In this video Dr. Singer discusses the thermoregulatory sweat test including several visual examples of normal vs. abnormal finding in TST testing.
The thermoregulatory sweat test, when performed correctly, continues to be an excellent test for small-fiber neuropathy, autonomic failure diagnosis, and evaluation of other neurological and dermatological disorders.
The thermoregulatory sweat test (TST) can be central to the identification and management of disorders affecting sudomotor function and small sensory and autonomic nerve fibers, but the cumbersome nature of the standard testing protocol has prevented its widespread adoption.
From a physiologic viewpoint, the thermoregulatory sweat test (TST) consists of giving a controlled heat stimulus to the body in a tolerable fashion to produce a generalized sweat response (i.e., recruiting all areas of skin capable of sweating).