one of the biggest things with ITBS you'll notice is that it starts to pain at the beginning of exercise, may go away, but will come back after exercise. If you're having pain going down steps then I would agree with everyone so far that you have a strong likelyhood of ITBS. It's a pain in the ass, and not one of those things that just 'goes away'. Another thing, some people swear by them and I'm one of those guys but check into something like a pat strap/cho strap(or whatever they call them now). Between that and the stretching every single day mine eventually went away. every now and then if my running form gets sloppy I might start having that twinge in my knee that lets me know I'm doing it wrong. hope this helps.