Im only 18, ive had this for 3 yrs, it may have been caused by accutane, ive been to many doctors and had xrays and stuf, noone knows anything, it doesnt look like anything is wrong..Started as an extremely sharp pain in the mid lower back with many muscle aches accompanying it and very difficult to bend, but over a few months turned into and still how it is today like my bone sticks out into everything, it feels extremely irritating..Its still hard to bend and tingling and sunburny sensations can accompany it as well sometimes, and heat a lot also..It also hurts just above the sacrum and lower lumbar area if I press around it and that makes it feel really weird but painful as well for days after around there..I find that sometimes I can feel the bones in my buttox as well and that feels a little irritating but nothing like that mid thoratic area of my back bone..It really feels like thats all im laying on, the harder the thing im against is worse but all things I sit or lay against will still have that feeling..Standing and not against anything is probably the best position I can be in..I can do physical activities but usually later the muscles will hurt a bit..I feel that this bone thing is the main problem and that the muscle pains and tingly sunburn heat stuf is all secondary..I dont know though and I actually made it through high school with it and now im stuck at home and I dont know what to do because its just too much pain and ive had it for so long and not knowing the reason why and being so young and all of this just makes it so much worse, and ive never heard anyone having the same kind of bone feeling thing as me..As well as anyone my age with anything nearly similar to this