Circadian rhythm sleep disorders (CSDRs) are defined as disturbances in the sleep pattern caused either by an change in the endogenous circadian timing system or a misalignment between the endogenous circadian system and the 24-hour social and physical environment (1).
According to the second International Classification of Sleep Disorders the general criteria for CRSD are as follows
CSRDs can be divided into
CSRDs should be taken into account in the differential diagnosis in a patient presenting with symptoms of insomnia and/or hypersomnia (2).
Since both behavioural and environmental factors play an important role in the development and maintenance of the disease, management strategies should include a multimodal treatment approach of behavioral and/or pharmacologic approaches (2)
Last reviewed 01/2018