Sleep disturbance (P06)

Many people experience sleep disturbances (sleep problems) regularly and a proportion of them (10-15%) consult a doctor for it. Sleep disturbances include problems in falling or staying asleep and may include waking up early, not being well rested upon waking up and restless dreaming. Sleep disorders are most widely classified according to the International Classification of Sleep Disorders (ICSD). The Diagnostic and Statistical Manual of Mental Disorders (DSM-5) largely parallels the ICSD. It distinguishes seven major categories of sleep disorder. ‘Sleeplessness’ (insomnia) is defined by sleep disturbance with a negative impact on daily functioning, occurring under appropriate conditions for sleep.