| Adenotosillar hypertrophy |
| Obesity |
| 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) |
| Mucopolysacharidoses |
| Abnormal neuromotor tone and/or control of breathing |
| Cerebral palsy |
| Duchenne muscular dystrophy |
| Combinations of the above disorders or conditions |
| Down's syndrome |
| Achondroplasia |
| Prader-Willi syndrome |