Melanonychiahttps://en.wikipedia.org/wiki/Melanonychia
Melanonychia waa midab madow ama bunni ah oo ku dhaca ciddiyaha caadiga ah, waxaana laga yaabaa inuu ka muuqdo dad badan oo Afro‑Caribbean ah.

Qayb ballaadhan oo midab leh, oo leh xariijimo aan joogto ahayn iyo fidin midab leh oo ku fidsan unugyada durugsan, waa calaamad muujin karta melanoma.

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  • Khadadka badan ee aan caadi ahayn ayaa lagu arkay. Melanonychia badanaa waa benign, laakiin haddii ay jiraan khadad badan oo aan caadi ahayn oo heerkan ah, biopsy ayaa laga yaabaa in la tixgeliyo.
  • Muehrcke's lines
  • Brown banding (Bunni banding)
References Melanonychia: Etiology, Diagnosis, and Treatment 32055501 
NIH
Bukaanno badan ayaa ka qaata melanonychia, maadaama ay keento midab madow ee saxanka ciddiyaha. Waa xaalad soo noqnoqota oo keenta midabka ciddiyaha, iyadoo sababo u dhexeeya kuwo aan halis ahayn (benign) ilaa kuwo halis ah, sida melanomas. Melanonychia-ga dhererka dheer waxay ka imaan kartaa arrimo maxalli ah ama nidaamsan oo kala duwan.
Melanonychia is a very worrisome entity for most patients. It is characterized by brownish black discoloration of nail plate and is a common cause of nail plate pigmentation. The aetiology of melanonychia ranges from more common benign causes to less common invasive and in situ melanomas. Melanonychia especially in a longitudinal band form can be due to both local and systemic causes.
 Melanonychia – Clues for a Correct Diagnosis 32064201 
NIH
Melanonychia represents a brown to black discoloration of the nail plate that may be induced by benign or malignant causes. Two main mechanisms are involved in the appearance of melanonychias, i.e., melanocytic activation and melanocytic hyperplasia.