Hi,
Im a 21 year old male who has had this big brown dark patch on my right upper back/shoulder since I was about 13. It hasnt gotten any bigger in relation to the rest of my body (hasnt spread), and sometimes can be itchy. Is generally drier than my regular skin. Anyone has any ideas as to what this is, and how I would go about treating it? Thanks

Im a 21 year old male who has had this big brown dark patch on my right upper back/shoulder since I was about 13. It hasnt gotten any bigger in relation to the rest of my body (hasnt spread), and sometimes can be itchy. Is generally drier than my regular skin. Anyone has any ideas as to what this is, and how I would go about treating it? Thanks
