Mucosal melanotic macule - I-Mucosal Melanotic Macule https://en.wikipedia.org/wiki/Oral_pigmentation#Melanotic_macule
I-Mucosal Melanotic macule (Mucosal melanotic macule) inokufumaneka kwi‑mucosa yomlomo, umlomo, inkalakahla, kunye ne‑gingiva. I‑mucosal melanotic macule izilonda ezinemibala ebrown, ebnyama (black), ebhlowu (blue) okanye engwevu (grey) ezifunyenwe kumlomo, ezibangelwa ukwanda kwe‑pigmentation ye‑epithelium kunye ne‑lamina propria. Umboniso wekliniki ubonisa indawo ebrown, ebnyama (black), ebhlowu (blue) okanye engwevu (grey) ejikelezwe kakuhle, izilonda zihlala zingaphantsi kwe‑10 mm ububanzi kodwa zinokuba nkulu kwezinye iimeko. Isifo esingabangelanga ingozi.

○ Uxilongo kunye noNyango
Ikakhulu ilungile ukuba iyafana ngokumila kunye nombala.

Iinkcukacha ezithe xaxe ― Isixhosa
References Black and Brown: Non-neoplastic Pigmentation of the Oral Mucosa 30671761 
NIH
Addison’s Disease (Hypoadrenocorticism),Peutz–Jeghers Syndrome,Laugier–Hunziker Syndrome (Idiopathic Lenticular Mucocutaneous Pigmentation),Drug-Related Discolorations,Melanotic Macule,Melanoacanthoma,Smoker’s Melanosis,Amalgam Tattoo/Foreign Body Tattoo,Black Hairy Tongue