Involuntary convulsion (5)
I believe the answer is:
spasm
(Other definitions for spasm that I've seen before include "Fit" , "Tic, sudden contraction" , "Jerk" , "Involuntary muscular movement" , "cramp" .)
I believe the answer is:
spasm
(Other definitions for spasm that I've seen before include "Fit" , "Tic, sudden contraction" , "Jerk" , "Involuntary muscular movement" , "cramp" .)