I hope someone can help me. I am a 30 year old white women. As far back as I can remember I've had a dark "ring" around my neck. The skin feels normal, not thick or rough, but it is really dark. I feel like I look dirty. When I was a child my mother would scrub at it but it would not go away. Everyday I wash/scrub the area but it doesn't seem to improve. I also miosturize the area after I shower. I have never been able to wear my hair up, or cut it short, because my neck looks so terrible. Have you ever heardof this? Is there anything I can do about it? ( I also have dark elbows and knees, but not nearly as bad as my neck).