Mommy to 2, I know certain meds can cause twitching. I too take clonazepam for insomnia at times. I always twitch the next day. I was also on Celexa for quite some time for bouts of depression and it caused my muscles to twitch. Also, in the beginning of my tx I twitched and muscles jerked all the time. Many abx later it has stopped. If it is your Lyme, don't worry, it will pass!