twenty-nail dystrophy

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Related to twenty-nail dystrophy: Trachyonychia

twen·ty-·nail dys·tro·phy

longitudinal ridging of all of the nails; seen in alopecia areata and lichen planus.

twenty-nail dystrophy

Longitudinal ridging and fragmentation of all the fingernails and toenails. It is a characteristic finding in lichen planus.
See also: dystrophy


acute or chronic inflammation of nail unit; associated with bacterial infection of nail bed and/or matrix and resultant nail plate dystrophy; see paronychia