Sweating is the body's natural cooling system, but excessive sweating causes concern when it appears without heat or movement. In hyperhidrosis, sweating follows a neurologic pattern rather than an environmental one, which helps separate it from other excessive sweating causes. Types of Hyperhidrosis and Night SweatsExcessive sweating causes fall into two main categories: primary hyperhidrosis and secondary sweating linked to medical conditions. Taking Control of Excessive Sweating and Night SweatsExcessive sweating causes are not always obvious, but patterns offer valuable clues. By understanding excessive sweating causes, night sweats, and hyperhidrosis, people can move from frustration to practical control.