Hyperhidrosis is a medical condition in which a person exhibits excessive sweating,[1][2] more than is required for the regulation of body temperature.[3] Although it is primarily a physical burden, hyperhidrosis can deteriorate the quality of life of the people who are affected from a psychological, emotional, and social perspective.[4] In fact, hyperhidrosis almost always leads to psychological as well as physical and social consequences.[5] People suffering from it present difficulties in professional fields, more than 80% experiencing a moderate to severe emotional impact from the disease[6] and half are subject to depression.
This excess of sweat happens even if the person is not engaging in tasks that require muscular effort, and it does not depend on the exposure to heat.[7] Common places to sweat can include underarms, face, neck, back, groin, feet, and hands. It has been called by some researchers 'the silent handicap'.[8]
Both diaphoresis and hidrosis can mean either perspiration (in which sense they are synonymous with sweating[9][10]) or excessive perspiration, in which case they refer to a specific, narrowly defined, clinical disorder.
^Vary, Jay C. (November 2015). "Selected Disorders of Skin Appendages—Acne, Alopecia, Hyperhidrosis". Medical Clinics of North America. 99 (6): 1195–1211. doi:10.1016/j.mcna.2015.07.003. PMID26476248.