I've just read your last post and you have just described what was going on the two weeks before I was hospitalized. The slightest movement of my lower body started twitching and really unstoppable pain. Then the upper body started twitching. This has just now lessened. I asked why my legs were hurting. When a sacrum is fractured it makes muscles go into fast forward mode. When the muscles are swollen around the nerves it makes the nerves over react. The first day I was in the hospital, I was semi conscious but I could feel the twitching of my body, first a leg, then a arm, then a ripple up one side of my back, then a foot, it seemed that my body was doing a painful dance. Just trying to untense a muscle was excruciatingly painful. Some of them still are. I'm wondering if your nerves and muscles are over reacting to the injury you have in your spine.

Billye