What do you mean by pulsating spasm? Do you mean "fasciculations"?Fasciculation are fast motion of very small part of a muscle. Sometime only one *smack*. Sometime many on the same spot. They are also moving from place to place. It's probably a benigh condition since i have it. If it is that, it's called BFS or Benign Fascicualtion Syndrome. I got them in 1992. Mainly in calves and it spreads over my body. Other symptomes include pins and needle (it's annoying a lot!) and burning sensation with some tremors.Check with you neuro if it increase.There is a Board like here on Neuromuscular at Harvard. Check on the net.---- Bye (IBS since 1980, BFS since 1992)