DARK SPOTS ON BACK
Do these spots itch? How long have you had them? How dark are they? If they are tan, it may be a condition known as tinea
versicolor. I would need a picture and a little more of a history.
Male or female? Age? Tinea versicolor is relatively easy to treat, although very often it can recur and last for years. It is also mildly contagious, but not serious.