Psychiatric disorders constitute 15.4% of the disease burden in established market economies. Many psychiatric disorders are associated with sleep disturbances, and the relationship is often bidirectional. This paper reviews the prevalence of various psychiatric disorders, their clinical presentation, and their association with sleep disorders. Among the psychiatric disorders reviewed are affec...

Based on 339 cases this review identifies, quantifies and compares 4 clinical forms of recurrent hypersomnia (1) Kleine-Levin syndrome (KLS) (239 cases), (2) Kleine-Levin syndrome without compulsive eating (KLS WOCE) (54 cases), (3) Menstrual related hypersomnia (MRH) (18 cases) and Recurrent hypersomnia with comorbidity (RHC) (28 cases). A second part of the review considers the main current i...

BACKGROUND Because the prevalence and characteristics of primary headache have yet to be thoroughly studied in patients with hypersomnia disorders, including narcolepsy and idiopathic hypersomnia, we examined these parameters in the Japanese population. METHODS In a multicentre cross-sectional survey, among 576 consecutive outpatients with sleep disorders, 68 narcolepsy patients and 35 idiopa...

This article includes discussion of idiopathic hypersomnia (IH), which is characterized by excessive daytime sleepiness, difficulty awakening (sleep drunkenness), and undisturbed overnight sleep without cataplexy or known cause of excessive sleepiness. Excessive sleepiness (hypersomnolence) of unknown etiology, which cannot be explained by another disorder, would be considered idiopathic hypers...

BACKGROUND A close association between narcolepsy and the Human Leukocyte Antigen (HLA)-DQB1*0602 allele suggests the involvement of the immune system, or possibly an autoimmune process. We investigated serum IgG levels in narcolepsy. METHODOLOGY/PRINCIPAL FINDINGS We measured the serum total IgG levels in 159 Japanese narcolepsy-cataplexy patients positive for the HLA-DQB1*0602 allele, 28 id...

1.0 Introduction 1.1 Purpose 1.2 Causes of excessive sleepiness 2.0 Background 3.0 Methods 3.1 Literature search strategy 3.2 Evidence review 4.0 Results 4.1 Treatment of hypersomnia due to narcolepsy with or without cataplexy 4.1.1 Medications 4.1.1.1 Amphetamine, methamphetamine, dextroamphetamine methylphenidate, and related preparations 4.1.1.2 Modafinil and armodafinil 4.1.1.3 Sodium oxyba...

OBJECTIVE In this study, we used a strict definition of hypersomnia and tested if the association between overeating-hypersomnia remained positive and significant. Hypersomnia was present if the total sleep time was close to 10h per day or was at least 2h longer than in normothymic periods. METHODS Cross-sectional study using the adult general population of California and New York. The sample...

We report on a stroke patient who showed recovery of hypersomnia concurrent with the recovery of an injured ascending reticular activating system (ARAS), which was demonstrated by diffusion tensor tractography (DTT).A 70-year-old female patient underwent coiling of the left ruptured posterior communicating artery after subarachnoid hemorrhage and both extraventricular drainage for management of...

BACKGROUND Bilateral paramedian thalamic infarctions (BPTIs) due to artery of Percheron occlusion are known to cause hypersomnia. However, the role of hypocretin-1, a wake-promoting peptide that is located at the lateral hypothalamus, in hypersomnia in these patients remains unclear. METHODS To clarify the role of hypocretin-1 in hypersomnia in patients with BPTIs, hypocretin-1 levels in the ...