Mayo Clinic Health Manager
Get free personalized health guidance for you and your family.
Get StartedDefinition
By Mayo Clinic staffSweating is your body's mechanism to cool itself. In most circumstances, it's both natural and healthy. But some people experience frequent or constant excessive sweating — called hyperhidrosis (hi-pur-hi-DRO-sis).
Hyperhidrosis is the secretion of sweat in amounts greater than needed to cool the body. Hyperhidrosis usually affects the palms of the hands, soles of the feet and underarms. Besides disrupting normal daily activities, hyperhidrosis can cause social anxiety or embarrassment.
Fortunately, several options are available to treat hyperhidrosis. In severe cases, surgical procedures can be very effective at stopping sweat.