Anhidrosis means lack of sweating. Sweating (also called perspiration or sometimes transpiration) is the loss of a watery fluid, consisting mainly of sodium chloride and urea in solution, that is secreted by the sweat glands in the skin of mammals. ...

It may be caused by underactivity of the sympathetic nervous system. Eccrine sweat glands are innervated via muscarinic acetylcholine receptors. Hence antimuscarinic drugs cause anhidrosis. The sympathetic nervous system (SNS) is one half of the autonomic nervous system; the parasympathetic nervous system (PNS) is the other. ... A nerve is an enclosed, cable-like bundle of nerve fibers or axons, which includes the glia that ensheath the axons in myelin. ... Muscarinic receptors are those membrane bound acetylcholine receptors that are more sensitive to muscarine than to nicotine. ... Many drugs are provided in tablet form. ...

See also

• Horner's syndrome