Hi all,

I've had this on my back for a while, and I wanted to know what you guys thought. It is roughly .5 centimeters in diameter. I am a 25 year old white male in good shape and it is on my back on my left side. I almost never see the sun. It does appear to be a few different colors, and I am kind of worried.

Here is the album...
http://imgur.com/a/PWkbH#0

Thanks