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Bipolar II disorder — MCCQE Part 1 MCQ

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ModerateDepressionBipolar II disorderMCCQE Part 1

A 35-year-old woman has recurrent episodes alternating between weeks of elevated mood, decreased sleep, increased energy and spending, and weeks of depression. No psychotic features. Never hospitalised. Most likely diagnosis?

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Correct answer: C — Bipolar II disorder

Hypomania (not full mania — no hospitalisation, no psychosis) + depressive episodes = Bipolar II. CANMAT: lithium, lamotrigine, or quetiapine first-line. Key: antidepressant monotherapy CONTRAINDICATED.

Reference: CANMAT Bipolar Guidelines