Melanonychiahttps://en.wikipedia.org/wiki/Melanonychia
Melanonychia ke 'mala o motšo kapa o sootho oa poleiti e tloaelehileng ea manala,' me e ka 'na ea e-ba teng e le ntho e tloaelehileng e fumanoang ho batho ba Afro-Caribbeans.

Band e bophara, e nang le 'mala o tebileng, e nang le mela e sa tsitsang, e atolaletsoe ka mabala a periungual ke sesupo sa melanoma.

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  • Mela e mengata e sa tloaelehang e bonoa. Melanonychia hangata ha e kotsi, empa haeba ho na le mela e mengata e sa tloaelehang boemong bona, biopsy e ka nahanoa.
  • Muehrcke's lines
  • Mabala a mane a bochabela (Brown banding)
References Melanonychia: Etiology, Diagnosis, and Treatment 32055501 
NIH
Bakuli ba bangata ba fumana melanonychia e amana le eona, kaha e baka mmala o motšo le o sootho oa poleiti ea manala. Ke lebaka la khafetsa le ho fifala ha manala, ka lithethefatsi ho tloha ho tse nyane ho isa ho tse kotsi, joalo ka melanomas. Longitudinal band‑joaloka melanonychia e ka bakoa ke lintlha tse fapaneng tsa lehae kapa tsa tsamaiso.
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.