Just an FYI Tobi and/or Tobramycin can also cause permanent balance issues--(bi-lateral vestibular damage) and trust me I have it and it SUCKS! It is like being off balance all the time, especially with stimulus (e.g. in a busy store)
It has slightly improved, but will never be 100% again. And it is without warning---all my labs were fine, even my hearing test was perfect.......just an FYI, I wish I had known that this was a side effect.
It usually is a result of IV Tobramycin, but it removes you from ever taking Aminoglycosides again (TOBI, Tobramycin, Gentamycin, etc.)
cindy