Is it normal that blotches have developed on my skin?
I have no idea what caused this because it may have been a number of things, but I never had these random blotches before. Within the year, these dark-colored patches have appeared on my arm and chest. There's no dryness or irregularities in the patches. They're just darker than the rest of my skin. I use oil-based body make-up that exacerbates it, but have never had this problem before.