How to Diagnose Bipolar Disorder with Dr. Phelps: Hypomania, Mixed States & the Clues DSM Misses

Diagnosing bipolar disorder is rarely as simple as finding a clear episode of hypomania. Dr. Phelps explains why bipolarity is better understood across a mood spectrum and walks through the clues that can help distinguish bipolar depression from unipolar depression: age of onset, family history, course of illness, treatment response, cyclicity, and collateral history. We also dig into mixed states, the “four A’s” of anxiety, anger, agitation, and attention problems, antidepressant activation, the HCL-32, and the Bipolarity Index. The larger theme is diagnostic humility: uncertainty is often appropriate, and treatment decisions should reflect both the strength of the evidence and the risks of getting the diagnosis wrong.

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