anxiety
"Xanax was a Godsend in the short term. Nearly immediate peace from all anxiety and panic symptoms. The longer I took it though, the more problematic it became. Constantly increasing dose for effectiveness, switching formulations. Finally addiction, dependence - didn't matter if it was called this or that. Discontinuing Xanax was painful. Like weeks long, restless, climbing the walls, no sleep. I'd still call it useful in a low dose, well supervised situation. "