Abstract
Unipolar and bipolar disorders are frequently considered to be dichotomous — mania or hypomania is either present or absent. To learn more, researchers in Germany performed diagnostic assessments three times over 10 years in a community sample of 2210 people (baseline age range, 14–24). The researchers used DSM-IV criteria, but subdivided the diagnoses to create seven categories: bipolar I disorder; bipolar II disorder; “pure” major depressive disorder (MDD); subthreshold …
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