I have had recurring IT band trouble for years. This started when I was training for a long distance race...the ONLY thing that ever worked and continued to work for me was Spenco shoe inserts. I have since stopped running as much to focus on racing my bike, but whenever I run, I know that if I have those things in there, my knee will feel ok. If I run without them, EVER, it kills! Just an idea if it's something you haven't tried...and likely what the doctor will recommend...sorry if I am repeating what someone else has said...I just saw this thread today!