Found in 6-17% of the adult population and associated with symptoms of fatigue and sleep that is not refreshing, poor concentration low or depressive mood. Other presentations may be altered driving behaviour , cognitive deterioration , and non breathing periods during sleep.
Often associated factor are airway obstruction , obesity difficult to control hypertension, fatigue, poor motivation or depression.
Investigation includes clinical history , screening questionnaire, appropriate physical examination, and sleep studies by polysomnogram which may be done in certain case by home telemetry or formal laboratory hospital based sleeps studies.
Treatment is by correction of underlying physical factors and the use of C-pap positive pressure devices occasionally dental splinting and corrective ENT surgery may be appropriate.