The central nervous system (CNS) encompasses the brain, spinal cord and nerves. Cancers in this area account for 25 percent of all childhood cancers. If your child has severe headaches, and especially if they occur when the child wakes up or are accompanied by vomiting, consult your doctor. Other symptoms of CNS cancers are typically related to vision. Children may experience their eyes turning in or out, or may have blurred vision, vision loss or double vision. If your child has any trouble walking or with his or her motor skills, talk to your doctor right away.
