Most children born with a chronic health condition or disability are expected to live more than 20 years. Health care is provided for these children in paediatric units until they are 18 years old, and the transition to the adult health care system is difficult because of poor collaboration between specialists and families who sometimes wonder if the adult specialist will be competent, although young disabled people need specialised follow-up. This report discusses U.S. and English models in the transition in health care. Coordination between paediatricians and adult services is necessary. The neuromuscular disorders clinic is cited as an example.