Central sleep apnoea/Cheyne–Stokes respiration: epidemiology 40 and risk factors Winfried Randerath Central sleep apnoea/Cheyne–Stokes respiration: pathophysiology 42 Winfried Randerath Central sleep apnoea/Cheyne–Stokes respiration: clinical aspects 45 Winfried Randerath Central sleep apnoea/Cheyne–Stokes respiration: consequences 46 Stefan Andreas Hypoventilation syndromes/chronic respiratory insufficiency in sleep 48 Viliam Donic and Zoltan Tomori Chapter 3 -Nonrespiratory conditions Nonrespiratory sleep disorders 52 Renata L. Riha Insomnia 53 Dirk Pevernagie Parasomnia and movement disorders during sleep 61 Renata L. Riha Hypersomnia 67 Renata L. Riha Circadian rhythm disorders 74 Renata L. Riha Psychiatric aspects of sleep 80 Chiara Baglioni and Dieter Riemann Chapter 4 -Clinical assessment Sleep history 84 Silke Ryan and Walter T. McNicholas