Spasticity is usually caused by central nervous system injuries, such as brain injuries or spinal cord injuries. Spasticity is a little different from stiffness.
I have cerebral palsy spastic diplegia. So it affects my legs and sometimes my fine motor skills. I walk with two canes. I do things a little slower, but I get things done.
One thing that parents can say to start a conversation with their kids is, "Let's talk".
Weight, height and body composition are important indicators for development. The tools used to measure these can be different for children with cerebral palsy.