Spasticity is usually caused by central nervous system injuries, such as brain injuries or spinal cord injuries. Spasticity is a little different from stiffness.
When first meeting a parent who's had a child newly diagnosed with cerebral palsy, I really want to try and help them understand their baby. It can be difficult for parents to take it in all at once and many leave that first interview quite overwhelmed, but you're going to meet some really important and helpful people.