Oppositional defiant disorder (ODD) and conduct disorder (CD), which usually develop at the age below 18, are considered as a sustainable antisocial and aggressive types of behavior, stepping beyond the borders of socially accepted standards. Within the recent decades, significant success has been achieved in the diagnosis and long-term predictive assessment of different types of behavioral aberrations, occurring during the childhood and adolescence. Early development of behavioral disorders forms unfavorable predictions and correlates with biological and social risk factors, such as attention deficit, impulse control disorder and unfavorable social environment. Most of the clinical observations confirm the effectiveness of different psychotherapeutic programs in the therapy of ODD/CD. The drug treatment is proposed to be used only in the severe cases, or in the cases when psychotherapeutic methods are not effective.

Presently, a lot of data indicate that the disturbance of mechanisms underlying the regulation of sleep-waking cycle coincides with the mechanisms underlying the development of depression. The disturbance of circadian rhythms is one of the core factors in the genesis of the most affective disorders including depression, which indicates the role of the internal biological clock in the pathophysiology of affective disorders. The episodes of depression, mania or hypomania may result from the disturbances in endogenous biological timing. In this review, we have summarized the literature data obtained in animal models or in the patients with affective pathology, in which the connection between the function of sleep and depression was demonstrated. Specifically, we highlight the mechanisms underlying sleep dysfunction during depression (imbalance of circadian rhythms, melatonin metabolism and mechanisms of neuroinflammatory dysregulation) and provide an evidence for the link between sleep function and depression (sleep disturbances during depressive episodes, the effects of pharmacotherapy, chronotherapy, the effect of sleep deprivation, comorbidity of obstructive sleep apnea and depression).

Currently, a lot of researches devoted to the study of the relationship between disorders of impulse control and addictive pathology are published. Attempts to isolate behavioral addictions into a separate group of addictive disorders make it necessary to assess impulsivity and impulse control disorders at different stages of formation, both behavioral and substance use addictions in a new way. This review is based on the results of research and analysis of existing models of addictive disorders, where the dominant position is given to impulsivity and impulse control disorders as predictors of addictive pathology. It contributes to most forms of aberrant management and other disorders included in the current classifications (DSM-V, ICD-10). In our opinion, many existing models of addictive pathology of impulsivity and impulse control disorders is given undeservedly little attention, which in the end leads to an incorrect assessment of substance and behavioral addictions. A model of development of addictive disorders is proposed, where the disorder of impulse control is given a decisive place in the question of «to be or not to be» addictive pathology.