Mood-Stabilizing Effect of Twice-Weekly Administration of Fluoxetine in a Bipolar II Disorder Patient

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Sir: Bipolar II disorder is a valid and reliable diagnosis^1,2and its prevalence in society is higher than was onceassumed.³ Considering the fact that the main clinical presentationof bipolar II disorder is composed of depressivesymptoms and the fact that the retrospective diagnosis ofepisodes of hypomania is often difficult,⁴ there has been anincreased concern about the underdiagnosis of bipolar IIdisorder in clinical practice in recent years,^5,6 and suggestionshave been put forward in order to reach correct diagnosis.⁴