Im not sure if this classifies as a disorder but basically since i hit puberty my collar bone has been actually jutting out from my shoulders...its disgusting and makes me keep my shirt on in summer...now heres the kicker..im a 17 year old guy..i know that a collar bone showing is more prevalent in woman but not in this case i guess...im 155 and about 6'0...i eat like its nooones business but i dont gain and ounce..i work out as much as humanly possible but nothing happens...please any advice or ANYTHING on what could be wrong with me would help..thank you