spastic paralysis

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A chronic pathological condition in which the muscles are affected by persistent spasms and exaggerated tendon reflexes because of damage to motor nerves of the central nervous system.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a loss or deficiency of motor control with involuntary spasms caused by permanent brain damage present at birth