I have had hip bursitis multiple times. Coming back from the injury can be frustrating since you may experience some discomfort for quite a while after runs. I still will have my hip bursa/IT-band flare up every once in a while. What works best to keep the injury from returning is:
1.) Get a deep tissue massage along the IT band and hip. Most of the time trigger points can be found in both areas and relieve most of the pain. I usually take this day off and ice after the massage.
2.) Kinesio tape over the hip and down the IT band.
3.) Strengthening excersises for the IT band and hip. Squats(no weights), lunges(no weights), planks, balancing on one leg.
4.) Foam roll around the Bursa, and ice after running.
Since I have implemented this treatment into my training I have never missed more than a day or 2 to treat my reoccuring bursitis.