Which of the following is an example of a mood disorder besides major depressive disorder?

• A. Bipolar disorder
• B. PTSD
• C. Generalized anxiety disorder
• D. Panic disorder

Answer: (A)

Understanding which diagnoses are mood disorders and how they differ from anxiety- and trauma-related disorders helps explain why bipolar disorder is the correct example. A mood disorder centers on persistent changes in mood—either depressive, elevated, or a combination—affecting overall function. Bipolar disorder fits this since it involves distinct mood episodes: depressive episodes similar to major depressive disorder and periods of mania or hypomania, where mood is abnormally elevated and energy and activity are heightened. This contrasts with the other options, which are categorized by anxiety or trauma-related symptoms rather than sustained mood elevation or depression: PTSD involves trauma-related symptoms like intrusive memories and hyperarousal; generalized anxiety disorder features pervasive worry and physical symptoms; panic disorder involves recurrent panic attacks. Therefore, bipolar disorder is the mood disorder referenced.