Riehl melanosishttps://en.wikipedia.org/wiki/Riehl_melanosis
Riehl melanosis bụ ụdị kọntaktị dermatitis, na-amalite site na itching, erythema, na pigmenti nke na-eji nwayọọ nwayọọ gbasaa nke, mgbe ọ ruru n'ókè ụfọdụ, na-eguzo. Ikpughe anyanwụ mgbe ejiri ụfọdụ senti ma ọ bụ ude nwere ike bute ọrịa ahụ.

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      References Riehl Melanosis 32491369 
      NIH
      A na-akpọkarị Riehl melanosis dị ka dermatitis kọntaktị pigmented. Ọ bụ ụdị akpụkpọ ahụ nke allergies na-akpata, nke na-emekarị site na ísì ísì na ihe ndị ọzọ dị na ngwaahịa ịchọ mma. N'agbanyeghị na a na-ekewa ya dị ka ụdị dermatitis, Riehl melanosis na-egosi mgbanwe pigmenti na akpụkpọ ahụ, na-enwe nanị obere ihe mgbaàmà nke mgbakasị ahụ. Ọ na-adịkarị na ndị nwere ụda akpụkpọ ahụ gbara ọchịchịrị. Nnyocha e mere n'oge na-adịbeghị anya enyochala ịdị irè nke ọgwụgwọ laser mid-fluence QSNY 1064-nm maka ịza ajụjụ dị omimi nke pigmenti jikọtara na Riehl melanosis. Ọmụmụ ihe ọzọ jikọtara usoro ọgwụgwọ dị iche iche, gụnyere low-fluence 1064-nm Q-switched Nd: YAG laser, ude hydroquinone, na tranexamic acid ọnụ, na-ebute ọganihu dị ukwuu maka ọtụtụ ndị ọrịa.
      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
      Riehl's melanosis bụ ụdị ọnọdụ akpụkpọ ahụ na-ebute site na ịkpọtụrụ ụfọdụ ihe nfụkasị ahụ na ikpughe ìhè anyanwụ. Ọ na-eduga ngwa ngwa, na-aga n'ihu na agba ntụ-agba aja aja nke akpụkpọ ahụ, nke nwere ike imetụta ndị ọrịa ma n'uche ma n'anụ ahụ. Ọ bụ ezie na a ka amabeghị kpọmkwem ihe kpatara Riehl's melanosis , nchọpụta dị adị na-egosi njikọ siri ike na ikpughe ihe nfụkasị ahụ. Maka ọgwụgwọ ahụ, a nwalewo ma ọgwụ ọdịnala na ọgwụgwọ laser, na-ejikarị ihe ndị na-acha ọcha na-etinye na akpụkpọ ahụ. Ọgwụgwọ laser, ọkachasị iji Q-switched Nd:YAG laser, egosila nsonaazụ na-ekwe nkwa maka ọgwụgwọ Riehl's melanosis. Ijikọta ụzọ ọgwụgwọ dị iche iche na-eduga na nsonaazụ dị mma.
      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.