Lichen planushttps://en.wikipedia.org/wiki/Lichen_planus
Ko te Lichen planus he mate mumura me te mate arai-a-mate e pa ana ki te kiri, nga whao, nga makawe, me nga kiriuhi mucous. Ko te ahua ko te polygonal, papura papatahi me nga tohu me te tauine i runga, te reticulated, te unahi ma pai (Wickham's striae). Ko te nuinga o nga wa ka pa ki nga ringaringa o muri, nga ringaringa toka me nga ringaringa, te katua, nga waewae o raro o mua me te mucosa waha. Ko te take kaore i te mohiotia, engari ko te whakaaro ko te hua o te tukanga autoimmune me te keu tuatahi e kore e mohiotia.

Hei whakaū i te tātaritanga o te kiri o te kiri, ka taea te mahi he koiora kiri. Ka taea e te immunofluorescence tika (DIF) te whai hua ki nga turoro me nga whiu puru ki te rereke i te ahuatanga mai i te mate autoimmune vesiculobullous.

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  • Ko nga whara whanui kei runga i nga hihana e rua he atypical. I tenei keehi, ko etahi atu mate mate mate mate roa (lichen simplex chronicus) ka nui ake te whakapae.
  • Nga toka ma o te Lichen planus kore-erosive i roto i te mucosa buccal (paparinga).
  • Kei te tohuhia e te ahua o te maha o nga papules pakeke. He ahua angamareni o Lichen planus.
  • Leukoplakia ― he papaki ma o te waha.
  • Atrophic lichen planus
References Cutaneous and mucosal lichen planus: a comprehensive review of clinical subtypes, risk factors, diagnosis, and prognosis 24672362 
NIH
Ko te Lichen planus (LP) he mate mumura roa ka pā te nuinga o ngā pakeke i ō rātau tau waenga. Ka puta ake ki te kiri, ki ngā kiri mūkō (mucous membranes) pērā i te waha, te makawe (hair), te esophagus, te pouaka reo, me te ararewa kanohi. He rerekē ngā āhua o te LP i runga i te āhua o ngā papules me ngā plaques, me te wāhi ka puta. Ko ngā rangahau e kī ana ko ētahi momo LP, pērā i ēra e pā ana ki te esophagus me ngā kanohi, kāore pea e tino kitea. Ko ētahi momo LP, pērā i ngā momo hypertrophic me ngā momo erosive i roto i te waha, ka tino taumaha, ka roa te wā. Ko ētahi atu mea pērā i te rongoā (medications), te whakapiri atu rānei ki ētahi matū ka puta te āhua o te inflammation.
Lichen planus (LP) is a chronic inflammatory disorder that most often affects middle-aged adults. LP can involve the skin or mucous membranes including the oral, vulvovaginal, esophageal, laryngeal, and conjunctival mucosa. It has different variants based on the morphology of the lesions and the site of involvement. The literature suggests that certain presentations of the disease such as esophageal or ophthalmological involvement are underdiagnosed. The burden of the disease is higher in some variants including hypertrophic LP and erosive oral LP, which may have a more chronic pattern. LP can significantly affect the quality of life of patients as well. Drugs or contact allergens can cause lichenoid reactions as the main differential diagnosis of LP.
 Lichen Planus 10865927
Ko te Lichen planus he mate kiri e tohuhia ana e te mawhero, te papatahi o te tihi me te papaki ka pa mai te mamae. Ka raru pea enei mate kiri, ina koa ka pa ki te waha, ki ngā ira tangata rānei. I roto i ngā keēvi kino, oral lichen planus ka nui ake pea te tūpono ki te whakawhanake i tētahi momo cancer (skin cancer). Ka pā anō ki te mahunga me ngā whā. Ahakoa kāore i te mōhiotia te take o te nuinga o ngā keēvi, ko ētahi ka puta mai i ētahi rongoā, hepatitis C rānei. Ko te nuinga o te maimoatanga he aihikirīmi kaha (strong creams) mō ngā keēvi o te rohe me te steroids waha (oral steroids) mō ngā mea kua horahia.
Lichen planus is a skin condition marked by purplish, flat-topped bumps and patches that can cause intense itching. These skin lesions can be distressing, especially when they affect the mouth or genitals severely. In severe cases, oral lichen planus may even increase the risk of developing a type of skin cancer. It can also affect the scalp and nails. While the cause of most cases is unknown, some may be triggered by certain medications or hepatitis C infection. Treatment typically involves strong creams for localized cases and oral steroids for more widespread ones.
 Oral lichen planus 32753462 
NIH
Ko te Lichen planus he ahua ka puta te mumura o te punaha raupatu, ka puta he tohu motuhake ki te kiri me ngā kiri mucous (mucous membranes). Ka pā ana ki te 5% o ngā pakeke, he maha ake ngā wahine, me te nuinga o ngā wā ka timata mai i te tau waenga. Ka kitea te whai wāhi o te waha (oral mucosa) ki te 77% o ngā keehi, ko te nuinga ka pā ki te paparinga o roto (buccal mucosa). Ahakoa kāore ētahi o ngā tangata ka rongo i ngā tohu, ka māmae pea ētahi ka raru ki ētahi kai (hei tauira, te waikawa, te raukikini) me te toothpaste.
Lichen planus is an immune-mediated inflammatory condition leading to characteristic lesions on skin and mucous membranes. It presents in up to 5% of the general adult population with a female predilection (2:1); the onset is most commonly in middle age. Up to 77% of patients with lichen planus have oral disease, with buccal mucosa the most common subsite. The oral lesions may be asymptomatic, although a subset of patients have pain and difficulty tolerating certain foods (e.g., acidic, spicy) and toothpaste.