Recurrent brief depression

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Recurrent brief depression (RBD) is a mental disorder characterized by intermittent depressive episodes, not related to menstrual cycles in women, occurring between approximately 6–12 times per year. These episodes should occur over the course of at least one year or more, fulfilling the diagnostic criteria for major depressive episodes (DSM-IV and ICD-10) except for duration in which RBD is less than 14 days (typically 5–7 days). Despite the short duration of the depressive episodes, such episodes are severe, and suicidal ideation and impaired function are rather common. The majority of patients with RBD also report symptoms of anxiety and increased irritability. Hypersomnia is also rather frequent. RBD may be the only mental disorder present; however, RBD may also occur as part of a history of recurrent major depressive episodes or bipolar disorders. RBD is also seen among some patients with personality disorders.