Hyperhidrosis is sweating more than would be expected in the temperature of the environment.

This condition is characterized by constitutional hyperactivity of the eccrine sweat glands. The disorder may be generalized, consisting of excessive body sweating, or localized, with sweating confined to the palms, soles, armpits, groin, and under the breasts.

As a rule, onset is in childhood or during puberty. Patients experience a heightened reaction to sweating stimuli such as anxiety, pain, exercise,...