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[Origin and treatment of insomnia: current status of knowledge].

Insomnia is the clinical syndrome that is characterized by the disturbances of night sleep and daytime wakefulness with the presence of the sufficient time for sleep. It is the most common and clinically important sleep disorder among the mentioned in the international classification. Insomnia is the geterogeneous condition including the primary and secondary, acute and chronic types. Specific and nonspecific approaches are utilized in the treatment of insomnia, and the methods of normalization of sleep hygiene and behavioral therapy are effective independently of the type of insomnia. Hypnotics and other medicines are recommended to use in acute and some secondary types of insomnia.