We spend a third of our lives sleeping. Sleep is not merely a passive state, but a complex function “of the brain, for the brain, by the brain”. Not surprisingly, many things can go awry in the co-ordinated function of organ systems during sleep, giving rise to a variety of sleep disorders.
There are nearly 70 primary sleep disorders other than Obstructive Sleep Apnoea (OSA). These include Complex Sleep & Breathing Disorders, Narcolepsy, Restless Legs Syndrome, Parasomnias (e.g., sleep walking, Sleep Terrors, REM-Sleep Behaviour Disorder), Insomnia and others.
Diagnosis and management of non-respiratory sleep disorders often require full PSG and other advanced diagnostics. Further, a number of patients referred for “Sleep Apnoea” have unresolved symptoms after standard diagnostic tests and CPAP treatment trial requiring additional tests.