Several months ago, I had sensation of "bugs" crawling under my skin in my arms, spread to my trunk. At night I would have terrible limb jerks, but these symptoms seemed to subside within a week. I had a hysterectomy several days later and felt fine the first day, but when they gave me Percocet for the pain, I started feeling shaky and the jerks returned. I wrote it off as side effect of medication. However, after returning home, the shakiness has not subsided. In fact,it feels worse. You can't see my body shake, I just feel shaky. My muscles feel jerky when I use them (walking down steps, lifting heavy objects etc.) You can actually see me shake when I hold a pencil to write, or tense up a muscle to use it.
I am also having incredible insomnia. My "shakes" won't let my body shut down to go to sleep. There is some evidence that this may be thyroid related (2 blood tests, elevated T4 of 14.7 and 13.3, uptake with elevated levels at 6 hour reading but normal at 24 hour reading.)I have been on Tapazole for 2 weeks with doses starting at 20 mg/day and now up to 40/mg since yesterday. But the shakes and insomnia have not subsided whatsoever. I have an appointment with an endocronologist next week, but I am skeptical now that this is thyroid related.
Neurologist exam normal, EMG normal. These symptoms are much worse in the morning than in the later part of the day.
I also have some stiffness/weakness in my left hand,pinkie and ring finger stiffen at night.
What can be causing these internal jitters? What can I do to get a diagnosis if it's not thyroid related?