When a person is looking for a way to communicate in alternative ways, they need to find something that really works for them. They need to try to find a voice that sounds natural. They want to try to find a way to be efficient. They want to be able to communicate as normally as possible, even though they're not using their biological voice.
The Cerebral Palsy Foundation has created a factsheet to help guide you in understanding and treating pain with CP. This fact sheet has been created for individuals with cerebral palsy to provide basic guidance surrounding common causes and potential treatment of pain.
One of the things that we typically forget when we look at kids who have conditions like CP, is that they're first and foremost, children.