Any good paediatrician will point out to the parents of a child with cerebral palsy (CP) that their child's brain damage is fixed and cannot be altered. This is not being over pessimistic but simply honest. The paediatrician then suggests a variety of treatments/therapies aimed at maximizing the child's potential. However, it is understandable if parents still go on to seek treatments which they hope can alter their child's condition. Such treatments include conductive education, cranial osteopathy, and hyperbaric oxygen (HBO) – to name a few. This article seeks to review available information on the use of HBO in the treatment of children with CP.