Riehl melanosishttps://en.wikipedia.org/wiki/Riehl_melanosis
Ko te Riehl melanosis he ahua o te mate paheketanga, ka timata mai i te pruritus, erythema, me te papura ka horapa haere, ka tae ki tetahi waahanga, ka noho tonu. Ko te mararatanga o te ra i muri i te whakamahinga o etahi hinu kakara, kirīmi ranei te take o te mate.

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      References Riehl Melanosis 32491369 
      NIH
      Ko te Riehl melanosis e mohiotia ana ko te mate paopao whakangao. He momo mate kiri na te mate mate pawera, i te nuinga o te wa ka puta mai i te kakara me etahi atu matū kei roto i nga taonga whakapaipai. Ahakoa te whakarōpūtia hei momo mate dermatitis, ka whakaatu a Riehl melanosis i nga huringa whakangao i te kiri, he iti noa nga tohu o te irirangi. He nui ake te ahua o nga tangata he kiri pouri. Kua tirotirohia e nga rangahau o tata nei te whaihuatanga o te mid-fluence QSNY 1064-nm maimoatanga laser mo te whakatika i te whakangao hohonu e pa ana ki te Riehl melanosis. Ko tetahi atu rangahau i whakakotahi i nga momo rongoa rereke, tae atu ki te low-fluence 1064-nm Q-switched Nd: YAG laser, kirīmi hydroquinone, me te waikawa tranexamic waha, i hua ake te whakapai ake mo te nuinga o nga turoro.
      Riehl melanosis (RM), commonly called pigmented contact dermatitis, is considered an acquired form of allergic contact dermatitis, typically to fragrance and other ingredients of cosmetic products. Although it is considered as a dermatitis, it presents clinically with hyperpigmentation over the face and shows pigment incontinence with minimal eczematous changes on histology. The condition is more commonly seen in dark-skinned people, causing an important psychosocial impact. A recent study showing the higher effectiveness of mid-fluence QSNY 1064-nm laser in targetting the deep pigmentation of RM has also been conducted. Another study used a combination of therapies to include low-fluence, 1064-nm, Q-switched Nd: YAG laser, hydroquinone cream, and oral tranexamic acid, with the majority of patients experiencing significant improvement.
       Research Advances in the Treatment of Riehl’s Melanosis 37168093 
      NIH
      Ko te Riehl's melanosis he momo mate kiri na te pa atu ki etahi mate mate me te pa ki te ra. Ka tere, ka tere haere te kiri-parauri-parauri o te kiri, ka tino pa ki nga turoro i te hinengaro me te tinana. Ahakoa ko te take tika o te Riehl's melanosis kare tonu i te mohiotia, ko nga rangahau o naianei e tohu ana he hononga kaha ki te rongo mate mate. Mo te maimoatanga, kua whakamatauria nga rongoa tuku iho me te whakamaarama taiaho, i te taha o te whakamahinga o nga mea whakangao ki te kiri. Ko te rongoa taiaho, inaa ko te whakamahi i te laser Q-switched Nd:YAG , kua kitea nga hua pai mo te rongoa Riehl's melanosis. Ko te whakakotahi i nga huarahi maimoatanga rereke ka puta nga hua pai.
      Riehl's melanosis (RM) is a contact photodermatitis, with fast progressive gray-brown skin pigmentation as the main manifestation, which can seriously affect the psychology and physiology of patients. Currently, although the etiological factors of Riehl's melanosis is still be unknown, the existing literature proves clearly the cause of it is related to the contacting with suspected allergens. For decades, there has been no standard method for the treatment of RM, but with both conventional drug therapy and laser therapy having been attempted. Topical application of bleaching agents is mainly used as an auxiliary treatment modality. The laser treatment modality remains a hot spot, among which Q-switched Nd:YAG laser is well received for RM. Positive outcomes have been achieved by the combined treatment modalities attempted in recent years also achieve positive outcomes.