I get muscle spasms, they can be really violent at times and happen at anytime. I have had shaking or tremors but its usually during a flare, i hope this helps.

I get what I call shaky hands. They tremble...not every day but sometimes. I really don’t know if it’s the fibro or a med that I’m on. I have been on Prozac for 21 years, so don’t really know what causes my hands to shake at times.

I get hand mild tremors especially in the early morning hours and if I over use my arms. I used to take Sertaline SSRI, caused severe hand/arm tremors, I had to quit after 4 weeks.
Sometimes I feel my whole body is trembling but not visible.

I am on trazadone and Prozac, so that makes sense!

Do you take an antidepressant? This can be a side effect of some medications. I get trembling in my hands, quite noticeable in my left hand. Mentioned it to my doctor and she didn’t seem to think anything of it. I think it is from the antidepressant I take but I have been on it so long I don’t know if I had the tremors before that.