This is the most common form, typically starting in childhood or adolescence, and is considered an (unknown cause) disorder of the autonomic nervous system. Hyperhidrosis - StatPearls - NCBI Bookshelf - NIH
Hyperhidrosis is a medical condition characterized by that goes significantly beyond what is physiologically required for the body to regulate its temperature . This overactive sweat response often occurs even when it is cool or when a person is at rest, frequently resulting in sweat that drips from the hands or soaks through clothing. Primary Focal Hyperhidrosis