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Published online by Cambridge University Press: 07 November 2014
Mixed episode is one of the more difficult-to-treat conditions in bipolar disorder. The presence of mixed features (symptoms of both depression and mania in a single acute episode) is associated with both poorer acute treatment response and poorer longitudinal outcomes, including shorter subsequent inter-episode periods and greater suicidality. Mixed features are indicative of an overall greater severity of both acute and chronic illness (Slide 1).