Is it possible to remove dark spots on my arms and back?

I tend to get spots and freckles easily.
 About 7 years ago, while tanning at the swimming pool with a friend, I got burned and suffered from blisters for a month.
 There are still marks from my bikini top from that time.
 Because of that incident, I got all kinds of spots on my arms and back that weren't there before (some people think they're acne).
 I inquired at a dermatologist, but the answer was that it wouldn't work.
 I'm writing this to see if new lasers may have come out as technology has developed in the meantime.
 Should I just give up and focus on my face? The freckles are appearing on my cheeks again. (I removed it a few times in the past but gave up)