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Examples include lichen planus, lichen sclerosus and lichen nitidus. It can also be associated with abrasion or drug use. [2] It has been observed in conjunction with the use of proton pump inhibitors, and might be a sign and/or symptom of lupus such as subacute cutaneous lupus erythematous, according to the case reports and reviews. [3] [4] [5 ...
Lichen planus may be categorized as affecting mucosal or cutaneous surfaces.. Cutaneous forms are those affecting the skin, scalp, and nails. [10] [11] [12]Mucosal forms are those affecting the lining of the gastrointestinal tract (mouth, pharynx, esophagus, stomach, anus), larynx, and other mucosal surfaces including the genitals, peritoneum, ears, nose, bladder and conjunctiva of the eyes.
Wickham striae or Wickham's striae are whitish lines visible in the papules of lichen planus and other dermatoses, typically in the oral mucosa. [1] The microscopic appearance shows hypergranulosis. They are named after Louis Frédéric Wickham. [2] [3]
Lichen planus Pterygium unguis (or dorsal pterygium [ 1 ] : 660 ) forms as a result of scarring between the proximal nailfold and matrix, with the classic example being lichen planus , though it has been reported to occur as a result of sarcoidosis and Hansen's disease .
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The mucosal lichen planus section could do with more details about conjunctival, nasal, otic, bladder involvement, etc but struggling to find MEDRS compliant sources. I have put "genital lichen planus" in the mucosal section, but I think that the implication is that it can occur on the genital skin as well.
Grinspan syndrome is a syndrome characterized by presence of the triad: essential hypertension, diabetes mellitus, and oral lichen planus. [1] Oral lichen planus is thought to be a result of the drugs used for treatment of hypertension and diabetes mellitus but this is not confirmed. [citation needed]