The GMFCS, MACS and CFCS are all tools used by therapists and researchers to help classify the functional capabilities of individuals with CP. This research article provides evidence of their stability over time.
There are so many different causes for potential pain that it can be hard to find the cause. If you have CP or are a parent of someone with CP it is really important to empower yourself with information on pain including what causes it and options for treatment. You need to work out what is causing the pain not just mask it with pain medication.