Cerebral palsy can affect a person’s posture, balance and ability to move, communicate, eat, sleep and learn. The parts of the body affected by cerebral palsy, the level of severity and combination of symptoms can differ for each person.For example, one person may have a weakness in one hand and find tasks like writing or tying shoelaces challenging.ecause cerebral palsy can affect the muscles around the mouth, 1 in 5 children with cerebral palsy have saliva loss (also known as dribbling, drooling or sialorhrea). The saliva loss may be more noticeable when they are concentrating on a fine motor task.