Prospectively ascertained mania and hypomania among young adults with child‐ and adolescent‐onset bipolar disorder

Objectives While adults with bipolar disorder (BD) often report symptoms starting in childhood, continuity of mania and/or hypomania (mania/hypomania) from childhood to adulthood has been questioned. Using longitudinal data from the Course and Outcome of Bipolar Youth (COBY) study, we assessed threshold mania/hypomania in young adults who manifested BD as youth. Methods: COBY is a naturalistic, longitudinal study of 446 youth with BD (84%...