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  • Title: Amyotrophic lateral sclerosis associated with insomnia and the aggravation of sleep-disordered breathing.
    Author: Takekawa H, Kubo J, Miyamoto T, Miyamoto M, Hirata K.
    Journal: Psychiatry Clin Neurosci; 2001 Jun; 55(3):263-4. PubMed ID: 11422868.
    Abstract:
    A case of amyotrophic lateral sclerosis (ALS) diagnosed by sleep-disordered breathing is described. The patient's chief complaints were insomnia and nocturnal dyspnea after taking a hypnotic drug. On examination, he showed restrictive ventilatory impairment, alveolar hypoventilation and hypoxia. Polysomnographic examination revealed marked hypoxia during REM sleep periods, decreased duration of REM sleep periods, and increased sleep disruption. Amyotrophic lateral sclerosis was diagnosed by the neurological finding of paraspinal muscle weakness and neurogenic changes revealed by needle electromyography and muscle biopsy. The daytime and nocturnal respiratory insufficiency improved after nasal bilevel positive airway pressure therapy. Amyotrophic lateral sclerosis should be suspected as a cause of insomnia and nocturnal dyspnea.
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