I have a hard bone-like protrusion on my left shoulder (seems to be fartheroutside than the ac joint and slightly lower).  Also have pain and stiffnesswhen trying to raise my arm all the way above my head.  Im seeing a doctorsoon, but any ideas what it might be?
Hello, Thank you for using Chat Doctor. I read your question and understood your concern. It any be anything from shoulder dislocation or fracture, tumor or infection. I would need X-rays or MRI images to give a better opinion. I wish you quick recovery.