Cerebral Palsy: a group of permanent movement disorders that appear in early childhood. Signs and symptoms vary among people. Often, symptoms include poor coordination, stiff muscles, weak muscles, and tremors. There may be problems with sensation, vision, hearing, swallowing, and speaking. Often babies with cerebral palsy do not roll over, sit, crawl, or walk as early as other children of their age. Other symptoms may include seizures and problems with thinking or reasoning, either of which occurs in about one third of people with CP.

Excerpt from: https://en.wikipedia.org/wiki/Cerebral_palsy