Although the brain injury that causes cerebral palsy is nonprogressive, adults with CP can experience a variety of symptoms as they age which often depend on the type of CP they have, as well as the level.
Early interventions for CP should be based on the strongest possible scientific evidence for benefit and should have the smallest possible risk of harm. In the US, early intervention (EI) is a system of services available under the age of 3, to support infants and toddlers with developmental problems and their families as they interact with and care for their child.