Pterygium unguis (or dorsal pterygium
[Freedberg, et al. (2003). ''Fitzpatrick's Dermatology in General Medicine''. (6th ed.). McGraw-Hill. .]) forms as a result of scarring between the proximal nailfold and matrix, with the classic example being
lichen planus
Lichen planus (LP) is a chronic inflammatory and autoimmune disease that affects the skin, nails, hair, and mucous membranes. It is not an actual lichen, but is named for its appearance. It is characterized by polygonal, flat-topped, violaceous p ...
, though it has been reported to occur as a result of
sarcoidosis
Sarcoidosis (; also known as Besnier–Boeck–Schaumann disease) is a disease involving abnormal collections of White blood cell, inflammatory cells that form lumps known as granulomata. The disease usually begins in the lungs, skin, or lymph n ...
and
Hansen's disease
Monster Beverage Corporation is an American beverage company that manufactures energy drinks including Monster Energy, Relentless (drink), Relentless, Reign (drink), Reign and Burn (energy drink), Burn. The company was originally founded as Ha ...
.
[James, William; Berger, Timothy; Elston, Dirk (2005). ''Andrews' Diseases of the Skin: Clinical Dermatology''. (10th ed.). Saunders. .]
See also
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Pterygium inversum unguis
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List of cutaneous conditions
Many skin conditions affect the human integumentary system—the organ system covering the entire surface of the Human body, body and composed of Human skin, skin, hair, Nail (anatomy), nails, and related muscle and glands. The major function o ...
References
Further reading
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External links
Conditions of the skin appendages
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