The research, conducted in a 4th level institution, specialized in pediatric care, with patients with cerebral palsy which took the GMFM66 test, then caregivers received training in identifying signs that could be related to pain associated with daily activities.After an observation period data was collected about pain signs noted by caregivers, so a relation between functional level and reported pain could be established. There were 28 patients who completed inclusion criteria, and an inverse relation between GMFM66 and LLANTO score, and direct between GMFCS and LLANTO score was found, which shows the relation of lower functional levels with pain signs reported by caregivers, showing us the need of integral management an evaluation in patients with disability and unable to communicate.