My Levaquin nightmare started over two months ago. However, only last week did I start to re-experience restlessness, heart pounding, a feeling that my arms are shaking, even when they're not, funny tremors -- a lot like anxiety, except there's nothing in particular on my mind. 

I know some folks have had this effect from the Levaquin. However, as you may have read in my other posts, I am also suddenly in extreme joint pain. So it's possible that my nerve problems are a more natural anxiety-like reaction to the almost continuous agony in my legs. 

My question is, how do I know which it is -- another drug effect, or merely a natural reaction to pain? Are there tests that might tell me?