I've entered month 4 of pcs and I've just begun to have these. They are awful! I've noticed in the last week or so I've felt more nervous and trembly than I ever have. Now these things are making it harder than ever to get any sleep at all. It sounds like this may be another phase that passes (hopefully). Has anyone had a medication that helped? I was just prescribed 10mg of nortriptyline to help me sleep. It has reduced the tremor-like feelings, but hasn't increased my sleep. Might need to up to 20mg tonight to see if that helps.