Which of the following is categorized as a depressive disorder?

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Persistent depressive disorder, formerly known as dysthymia, is categorized as a depressive disorder. Bipolar I disorder involves episodes of both mania and depression, and is not exclusively a depressive disorder. Chronic depressive disorder is not a recognized diagnosis in the DSM-5. Posttraumatic stress disorder is not a depressive disorder, but rather an anxiety disorder.

Which of the Following Is Categorized as a Depressive Disorder