Table 1 Characteristic examples of disorders or conditions predisposing to obstructive sleep apnoea in children
Adenotosillar hypertrophy
Subtle craniofacial abnormalities or profound craniofacial anomalies
 Mild mandibular retrognathia
 Marked midfacial hypoplasia (e.g. Apert syndrome, Crouzon syndrome)
 Marked mandibular hypoplasia (e.g. Pierre Robin sequence, Treacher Collins syndrome, Stickler syndrome)
Abnormal neuromotor tone and/or control of breathing
 Cerebral palsy
 Duchenne muscular dystrophy
Combinations of the above disorders or conditions
 Down's syndrome
 Prader-Willi syndrome