People with myoclonus often describe their symptoms as jerks, shakes or spasms that are:  Sudden Brief Involuntary Shock-like Variable in intensity and frequency Occurring in one part of the body or all over the body Sometimes severe enough to interfere with eating, speaking or walking 
people myoclonus symptoms jerks  shakes spasms are:  sudden brief involuntary shock-like variable intensity frequency occurring part body body severe interfere eating  speaking walking 
myoclonus