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A condition characterized by (unpredictable) sweating that is in excess of what is necessary for the regulation of body temperature


Hyperhidrosis is a condition characterized by too much sweating. It may be due to a disease of the sweat glands resulting in excessive sweating even when the temperature is cool or when at rest.1 It is commonly triggered by emotional and thermal stress. But it can also occur in the presence of little, as well as the lack of a, stimulus.

There are two types of hyperhidrosis based on the body parts affected: generalized and localized. Hyperhidrosis affecting the whole body is said to be generalized or secondary whereas the one that affects certain parts of the body only (such as palms, soles, underams, scalp, etc.) is described as localized or primary. The latter may also be called focal hyperhidrosis. Hyperhidrosis may also be typified as either congenital or acquired based on its onset.

Word origin: Greek hypér (over, above) + hidrosis



See also:

Related term(s):

  • hyperhidrotic (adjective)

Mentioned in:

1"Hyperhidrosis: MedlinePlus Medical Encyclopedia." U.S National Library of Medicine. U.S. National Library of Medicine, n.d. Web. 10 Oct. 2014. [ http://www.nlm.nih.gov/medlineplus/ency/article/007259.htm Link]