I have been taking xanax since 1999 and no problem with that drug, even at high doses (2mg 4 times/day).

But in 2009 I was taking temazepam 60mg at night for sleep. While I was on the temazepam (also taking xanax and other meds) I started awakening in the night unable to walk and I had aphasia. I could understand speech but could only respond with moans. So my pdoc did MRI and EEG and admitted me inpatient and he stopped the temazepam. I read that some people with migraines can experience episodic aphasia and I do have migraines but my episodes stopped when we stopped the temazepam. Weird.