restless legs syndrome
"I use klonopin for panic disorder and RLS.  It works amazingly for my panic, but it has actually worsened my RLS!  It does make me sleepy, but every time I'm about to doze off, the kicking and terrible feelings come back in my legs.  I can't stop moving them for at least an hour.  I'm glad it works for some people, but it doesn't work for me. I'm on 2 mg a day."