Framing cerebral palsy as a childhood condition overlooks the significant number of adults living with the condition in the United States—more adults than children. This narrow focus skews research priorities, with most efforts concentrated on pediatric care rather than care across the lifespan. In this article from the Institute for Health Care Policy and Innovation, physician Mark D. Peterson, Ph.D., M.S., discusses the need to redefine cerebral palsy and ensure consistent care for both children and adults.