I have several black spots on my back that itch often and sometimes they are sore to tough. I am very scares that I have something really bad. My cousin saw one of the marks at the top of my neck and looked down my back and said I should go to doctor because it looks really back. Every time I itch and touch elsewhere on my body I break out there....I have tried coco butter but they don't clear up. Then I have small bumps that look like little blackheads and when I burse them they turn into black marks.

Pleas help