Brain and Nervous System Overview Your child’s brain and nervous system are complex. The brain continues to develop throughout childhood and adolescence. Brain Tumors Headache and seizures may be symptoms of a brain tumor. Other symptoms may include drowsiness, slurred speech, and personality changes. Congenital and Hereditary Conditions These conditions include cerebral palsy and spina bifida. Good prenatal care can help prevent some congenital conditions. Other Neurological Conditions Look here for information on children’s headaches, head and spinal injuries, and neuromuscular diseases.