I've the same, and, basically, it's inflammation which can be quite painful. I searched my files for info. when I had been asking about it on OBT, only I had to replace my hard drive so I will look further tomorrow.

A bone scan will detect or highlight hot spots that signal inflammation. But... so, too, did other radiographic imaging.

I do know that I don't sit or work in positions that others would find within the norm, but... one thing I'd definitely suggest is a PT or occupational therapist to assure that positioning or posturing won't also make the prob. worse.