This is the condition in which brain damage around time of birth leads to partial paralysis. Between 0.1 and 0.2 percent of children have some form of cerebral palsy. The specific cause of most cases of cerebral palsy is unknown. The most commonly predicted cause is traumatic delivery due to small maternal pelvis, large fetal head, or the partial separation of the placenta from the uterus before delivery. Other causes include oxygen deprivation, delayed spontaneous respiration, or severe cardiac malformations. As a result of the above, the infant have a small brain, hydrocephalus, or focal lesions in the brain. The child's appear to be demented and deformed to the bright, alert, and happy, with one wasted and spastic limb. Physical therapy is available, but the frequency of cerebral palsy will diminish only with improved prenatal care and delivery techniques.