Ataxia is the least common form of cerebral palsy (observed in 5-10% of cases of cerebral palsy). It is caused by damage to the cerebellum, the balance center of the brain. Individuals with ataxic cerebral palsy experience problems with balance, including shakiness (tremors) in hands and arms. Ataxia can also affect the legs, speech, and eyes, though individuals may be affected differently. Symptoms include slow motor development inability to reach major developmental milestones. Ataxia may affect adults differently than children. It is most commonly a birth defect, but can also develop following meningitis or head trauma. There is no cure for any type of cerebral palsy, but there are a number of different treatmants that have been proven to control symptoms in the short term.