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Semin Neurol 2004; 24(3): 283-292
DOI: 10.1055/s-2004-835064
DOI: 10.1055/s-2004-835064
Parasomnias
Mark W. Mahowald1 , Michel Cramer Bornemann2 , Carlos H. Schenck3- 1Minnesota Regional Sleep Disorders Center, and Departments of Neurology, Hennepin County Medical Center, and the University of Minnesota Medical School, Minneapolis
- 2Minnesota Regional Sleep Disorders Center, and Departments of Pulmonary Medicine, Hennepin County Medical Center, and the University of Minnesota Medical School, Minneapolis
- 3Minnesota Regional Sleep Disorders Center, and Departments of Psychiatry, Hennepin County Medical Center, and the University of Minnesota Medical School, Minneapolis
Further Information
Publication History
Publication Date:
27 September 2004 (online)
Parasomnias are defined as unpleasant or undesirable behavioral or experiential phenomena that occur predominately or exclusively during the sleep period. Initially thought to represent a unitary phenomenon, often attributed to psychiatric disease, it is now clear that parasomnias are not a unitary phenomenon but rather are the manifestation of a wide variety of completely different conditions, most of which are diagnosable and treatable. The parasomnias may be conveniently categorized as “primary sleep parasomnias” (disorders of the sleep states per se) and “secondary sleep parasomnias” (disorders of other organ systems, which manifest themselves during sleep). The primary sleep parasomnias can be classified according to the sleep state of origin: rapid eye movement (REM) sleep, non-REM (NREM) sleep, or miscellaneous (i.e., those not respecting sleep state). The secondary sleep parasomnias can be further classified by the organ system involved. The underlying pathophysiology of many parasomnias is state dissociation-the brain is partially awake and partially asleep. The result of this mixed state of being is that the brain is awake enough to perform very complex and often protracted motor and/or verbal behaviors but asleep enough not to have conscious awareness of, or responsibility for, these behaviors.
KEYWORDS
Parasomnias - sleepwalking - sleep terrors - REM sleep behavior disorder - sleep-related headaches - sleep-related expiratory groaning - rhythmic movement disorder
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Mark W MahowaldM.D.
Minnesota Regional Sleep Disorders Center, Hennepin County Medical Center
701 Park Avenue, Minneapolis
MN 55415