The symptoms of cerebral palsy are problems in the muscle tone, you can have stiffness , increased muscle tone ( hypertonia worse) and spasticity ( muscle resistance to movement) or sagging (hipotonia) that is to say less muscle tone. Other symptoms are depending on the commitment engine , the absence of a control head or acquired late, involuntary movement ( clonus, nystagmus, etc) , swallowing problems, decreased auditory and visual, incontinence, trouble communicating, etc