Depressed mood is a core feature of which disorder?

• A. Generalized anxiety disorder
• B. Major depressive disorder
• C. Bipolar II disorder
• D. Obsessive-compulsive disorder

Answer: (B)

Depressed mood as a defining symptom of major depressive disorder. In major depressive disorder, a person experiences a persistent sad or empty mood most of the day, nearly every day, for at least two weeks, along with other symptoms such as diminished interest or pleasure, sleep and appetite changes, fatigue, feelings of worthlessness, and concentration problems. The presence of depressed mood (or a markedly diminished interest or pleasure) is required for diagnosis, making this the best match among the options. Generalized anxiety disorder centers on excessive worry rather than a sustained sad mood. Obsessive-compulsive disorder involves intrusive thoughts and repetitive behaviors, not primarily mood disturbance. Bipolar II includes depressive episodes plus hypomanic symptoms, but the defining feature of this option set is the mood disturbance characteristic of major depressive disorder.