I have a large pigmentation area around my armpit area. It extends 1 to 1 ½ inches beyond the hairline area, the entire pigmentation is probably 6 inches long by 4 inches wide. It is dark in color (grayish, blackish) it is raised, but not bumpy. There is no rash, it is not itch and it is not red. It has increased in size, started out small, maybe 2 by 2 inches and progressively has gotten very large.
I have looked in the internet and found sites talking about darkening in the armpit area, but I think this is mostly in the hairline area only. They recommend bleach creams. I have not put anything on it, don’t want to until I know what it is. Any ideas?