Running season has arrived and a lot of you wanted to hit the ground running, but instead, you hit the ground hurting…hurting on the outside of your knee. If that’s the case, you could have iliotibial band syndrome (ITBS) or IT band syndrome for short. IT band syndrome is an overuse injury that is common in endurance athletes like runners and bikers. It affects a tissue that runs from the side of your hip all of the way down past your knee. Most of the time, the inflammation manifests itself as pain on the outside of the knee. It can be incredibly painful and is typically a frustratingly stubborn injury to deal with.