Sleep hyperhidrosis is profuse sweating that occurs during sleep.
The sweating can cause an awakening because of discomfort due to wet sleepwear, and the patient may have to arise to change into another set of sleepwear. This type has no known cause and is so severe and debilitating that it interfers with everyday activities, such as working, going to school, etc. This type of hyperhidrosis is sometimes treated by operating to remove the sweat glands. We are not dealing with primary hyperhidrosis on this web page. In OSA, the sweating is related to the sleep restlessness and movements.