[Insomnia and psychiatric disorders].

INSOMNIA AND PSYCHIATRIC DISORDERS. Insomnia is frequent in psychiatric disorders. In particular, insomnia can be a risk factor, as well as a comorbid condition, or a symptom and an early sign of psychiatric disorders. Insomnia may emerge during any stage of illness. It includes prodromal, first episode, acute, recurrence, and even remission stages, thereby being associated with a worse course of illness. Insomnia increased symptom severity, relapses or recurrences, and increased suicidal risk. Thus, insomnia is an important modifiable risk factor to prevent psychiatric disorders and/or achieve and maintain remission. Thereby insomnia evaluation and management should be a priority in psychiatric cares. Indeed, it has been demonstrated that targeting insomnia can not only improve insomnia itself but also have a positive impact on the trajectory of psychiatric disorders.