question: My boyfriend has back pain that he says it is not anything like he has injured himself.  He has had it for about 2 months.  He is 48, weighs 270 and is 61.   and has had a severe sleep disorder for most of his life.   He said that the pain has settled in his left shoulder blade.  He has had a blood test, an ekg etc and the doctor found nothing.  He has no fever, chills and doesnt seem to have a virus.  He has been working out for 5 or 6 months but has no injury.  If he takes different pain medicine it will ease the pain a little but he has had sever pain where he could almost cry. Could this be some kind of infection?  Could you please give us some guidance.