The Ring of Fire: Childhood Trauma, Emotional Reactivity, and Mixed States in Mood Disorders.

Childhood trauma (CT) is strongly associated with bipolar disorder, possibly through emotional hyperreactivity (EH). Mixed symptoms/states (MSs) are associated with increased illness severity. The authors tested through a systematic review the association between CT and MSs. The authors systematically looked for studies exploring associations between MSs and CT, CT and EH, and EH and MSs. Most literature agrees that MSs are associated with CT; the latter was found to be associated to EH, which is in turn associated with MSs. The literature supports an association between CT and later development of MSs, possibly mediated through EH.