- Section 1 The Subject Matter of and Approach to Psychiatry
- 1.3 Psychiatry as a worldwide public health problem
- 1.4 The history of psychiatry as a medical specialty
- 1.5 Ethics and values
- 1.6 The psychiatrist as a manager
- 1.7 Descriptive phenomenology
- 1.8 Assessment
- 1.9 Diagnosis and classification
- 1.10 From science to practice
- Section 2 The Scientific Basis of Psychiatric Aetiology
- 2.3 The contribution of neurosciences
- 2.4 The contribution of genetics
- 2.5 The contribution of psychological science
- 2.6 The contribution of social sciences
- 2.7 The contribution of epidemiology to psychiatric aetiology
- Section 3 Psychodynamic Contributions to Psychiatry
- Section 4 Clinical Syndromes of Adult Psychiatry
- 4.4 Persistent delusional symptoms and disorders
- 4.5 Mood disorders
- 4.6 Stress-related and adjustment disorders
- 4.7 Anxiety disorders
- 4.7.1 Generalized anxiety disorders
- 4.7.2 Social anxiety disorder and specific phobias
- 4.7.3 Panic disorder and agoraphobia
- 4.8 Obsessive–compulsive disorder
- 4.9 Depersonalization disorder
- 4.10 Disorders of eating
- 4.11 Sexuality, gender identity, and their disorders
- 4.12 Personality disorders
- 4.13 Habit and impulse control disorder
- 4.14 Sleep–wake disorders
- 4.14.1 Basic aspects of sleep–wake disorders
- 4.14.2 Insomnias
- 4.14.3 Excessive sleepiness
- 4.14.4 Parasomnias
- 4.15 Suicide
- 4.16 Culture-related specific psychiatric syndromes
- Section 5 Psychiatry and Medicine
- Section 6 Treatment Methods in Psychiatry
- 6.2 Somatic treatments
- Section 7 Social Psychiatry and Service Provision
- Section 8 The Psychiatry of Old Age
- Section 9 Child and Adolescent Psychiatry
Excessive sleepiness
- Chapter:
- Excessive sleepiness
- Author(s):
Michel Billiard
- DOI:
- 10.1093/med/9780199696758.003.0119
Excessive sleepiness is not an homogeneous concept. It can manifest itself as bouts of sleepiness, irresistible and refreshing sleep episodes, abnormal lengthening of night sleep with a major difficulty waking up in the morning or at the end of a nap or even periods of a week or so of almost continuous sleep recurring at several months’ intervals. According to the recent second edition of the International Classification of Sleep Disorders (ICSD-2), disorders of excessive sleepiness are distributed within three chapters: sleep-related breathing disorders, hypersomnias of central origin not due to a circadian rhythm sleep disorder, sleep-related breathing disorders, or other cause of disturbed nocturnal sleep, and circadian rhythm sleep disorders. However in this volume aimed at psychiatrists, the presentation of disorders of excessive sleepiness will obey another logic. Following “Generalities” including epidemiology, morbidity, clinical work-up, and laboratory tests, the various aetiologies will be presented according to the following six subchapters: ♦ Hypersomnia not due to substance or known physiological condition (non-organic hypersomnia or psychiatric hypersomnia) ♦ Hypersomnia due to drug or substance ♦ Behaviourally induced insufficient sleep syndrome ♦ Hypersomnia in the context of sleep-related breathing disorders ♦ Hypersomnias of central origin ♦ And the special case of delayed sleep phase syndrome.
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- Section 1 The Subject Matter of and Approach to Psychiatry
- 1.3 Psychiatry as a worldwide public health problem
- 1.4 The history of psychiatry as a medical specialty
- 1.5 Ethics and values
- 1.6 The psychiatrist as a manager
- 1.7 Descriptive phenomenology
- 1.8 Assessment
- 1.9 Diagnosis and classification
- 1.10 From science to practice
- Section 2 The Scientific Basis of Psychiatric Aetiology
- 2.3 The contribution of neurosciences
- 2.4 The contribution of genetics
- 2.5 The contribution of psychological science
- 2.6 The contribution of social sciences
- 2.7 The contribution of epidemiology to psychiatric aetiology
- Section 3 Psychodynamic Contributions to Psychiatry
- Section 4 Clinical Syndromes of Adult Psychiatry
- 4.4 Persistent delusional symptoms and disorders
- 4.5 Mood disorders
- 4.6 Stress-related and adjustment disorders
- 4.7 Anxiety disorders
- 4.7.1 Generalized anxiety disorders
- 4.7.2 Social anxiety disorder and specific phobias
- 4.7.3 Panic disorder and agoraphobia
- 4.8 Obsessive–compulsive disorder
- 4.9 Depersonalization disorder
- 4.10 Disorders of eating
- 4.11 Sexuality, gender identity, and their disorders
- 4.12 Personality disorders
- 4.13 Habit and impulse control disorder
- 4.14 Sleep–wake disorders
- 4.14.1 Basic aspects of sleep–wake disorders
- 4.14.2 Insomnias
- 4.14.3 Excessive sleepiness
- 4.14.4 Parasomnias
- 4.15 Suicide
- 4.16 Culture-related specific psychiatric syndromes
- Section 5 Psychiatry and Medicine
- Section 6 Treatment Methods in Psychiatry
- 6.2 Somatic treatments
- Section 7 Social Psychiatry and Service Provision
- Section 8 The Psychiatry of Old Age
- Section 9 Child and Adolescent Psychiatry