OK so for a couple of years now I have been having small muscle twitches. They are usually something I can see if I look close enough, like a thigh muscle, or eyelid, or lower leg or upper forearm twitches. Bur for several months they are gerting worse and now they are off the charts in a ridiculous, and can I say embarrasing when I am in public. Here is a good example- I was in a literacy training session. With no notice at all, I jumped up, halfway out of my chair, said 'AH!' and plopped back in the chair, kinda pretzel-ish. NONE of this was under my control. It happened again today while I was working a docent shift at a local museum exhibit. I was standing, when all of a sudden I felt myself sinking- then jerking back up then down, knees bending, ankles turning, like a wonky robot that can't make up its mind where to be. It feels as tho someone is behind me or beside me, an invisible person who just gives me a hearty shove. I am always startled when it happens. This is getting more common than I like. Any thoughts?