u/Damon-Salvatore-21

I actually don't know what this is and I'm having this condition for long time. Whenever I get injury or insect bite ,the wounds later turns to a dark spot (darker like this) why is this happening ? Is it because of food habit,genetic, or medical condition??? Can someone help to me figure out what is this ?

u/Damon-Salvatore-21 — 21 days ago