Sleep disorders have become increasingly prevalent, with many adults worldwide reporting
sleep dissatisfaction. Major Depressive Disorder (MDD) and Bipolar Disorder (BD) are …

Hypersomnolence plays an important role in the presentation, treatment and course of mood
disorders. However, there has been relatively little research that examines objective …

In psychiatric disorders, comorbid depressive symptoms are associated with clinically
important issues such as reduced quality of life, a poor prognosis, and increased suicide …

Abstract According to the DSM-5,“reduction in the need for sleep” is the only sleep-related
criteria for mixed features in depressive episodes. We aimed at studying the prevalence …

Objectives To examine (i) the frequency of different sleep complaints (early wake-up, trouble
falling asleep, hypersomnia) and their co-occurrence and (ii) the sociodemographic …

Sleep, depression and insomnia have manifold associations. Psychiatric sleep research in
affective disorders has demonstrated that sleep in depression is characterized by an …

Hypersomnia is prevalent and persistent across mood disorders. This review has two
aims:(1) to synthesize the research that has accrued on hypersomnia in mood disorders and …

Hypersomnia is commonly comorbid with depressive illness and is associated with
treatment resistance, symptomatic relapse, and functional impairment. This review highlights …

Insomnia is a highly prevalent sleep disorder with strong bidirectional associations with
depressive symptoms. The circadian preference for eveningness has been shown to be …

Psychological disorders, particularly mood disorders, such as unipolar depression, are often
accompanied by comorbid sleep disturbances, such as insomnia, restless sleep, and …