sinusitis
"Have had a sinus infection for two weeks with a round of azithromycin that didn't work. My doctor prescribed Avelox and I was pretty scared after reading some of the side effects others have had. I'm on day 4 and my sinus infection is so much better and the coughing from my bronchitis is almost gone.  So much better!  Only side effect is not being able to fall asleep."