Early onset major depressive disorder.

The present paper provides an overview of the clinical diagnosis and presentation, epidemiology, coexisting problems, and treatment issues of child and adolescent depressive disorders, with a focus on major depressive disorder (MDD). Depression is a common and potentially debilitating disorder for youth; has significant comorbid, behavioural and systemic sequelae; and is associated with a significant suicidal risk. Although rigorous study of psychosocial and pharmacological treatment modalities is in its infancy, current treatment is also informed by judicious and patient-specific clinical judgment. In view of the duration of MDD, remission and recurrence rates, morbidity, and potential chronicity of impaired psychosocial functioning, both active treatment and research involving MDD are indicated.