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Focal hyperhidrosis, also known as primary hyperhidrosis, is a disease characterized by an excessive sweating localized in certain body regions (particularly palms, feet and underarms). Studies suggest that this condition, affecting between 1% and 3% of the US population, seems to have a genetic predisposition in about two thirds of those affected.
There are three types of sweat glands: eccrine, apocrine, and apoeccrine. [1] Apocrine glands are primarily responsible for body malodor and, along with apoeccrine glands, are mostly expressed in the axillary (underarm) regions, whereas eccrine glands are distributed throughout virtually all of the rest of the skin in the body, although they are also particularly expressed in the axillary ...
Daily sweat or the extra sweating caused by heat or physical activity comes from your skin’s eccrine glands. It’s actually 99 percent water, and it doesn’t smell that bad, explains Johnson.
Sweat glands, also known as sudoriferous or sudoriparous glands, from Latin sudor ' sweat ', [6] [7] are small tubular structures of the skin that produce sweat. Sweat glands are a type of exocrine gland , which are glands that produce and secrete substances onto an epithelial surface by way of a duct .
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Hands, feet, armpits, groin, and the facial area are among the most active regions of perspiration due to the high number of sweat glands (eccrine glands in particular) in these areas. When excessive sweating is localized (e.g. palms, soles, face, underarms, scalp) it is referred to as primary hyperhidrosis or focal hyperhidrosis.
Chromhidrosis is a rare condition characterized by the secretion of colored sweat. [2] It is caused by the deposition of lipofuscin in the sweat glands. Cases of red, blue, green, yellow, pink, and black sweat have been reported. Usually, chromhidrosis affects the apocrine glands, mainly on the face and underarms.
The human body produces perspiration (sweat) via two types of sweat gland: eccrine sweat glands which cover much of the skin and produce watery odourless sweat, and apocrine sweat glands in the armpits and groin, which produce a more oily "heavy" sweat containing a proportion of waste proteins, fatty acids and carbohydrates, that can be metabolized by bacteria to produce compounds that cause ...