Which specifier refers to mood episodes that occur at specific times of the year?

• A. With seasonal pattern
• B. With peripartum onset
• C. With mixed features
• D. With melancholic features

Answer: (A)

The main idea here is recognizing a seasonal pattern specifier, which describes mood episodes that reliably occur at specific times of the year. In practice, these episodes tend to begin and end around the same seasons—often worsening in fall or winter and improving in spring or summer—creating a predictable yearly rhythm. This seasonal timing distinguishes it from other specifiers: peripartum onset is tied to childbirth, not calendar season; mixed features refer to the presence of concurrent manic or hypomanic symptoms with depressive symptoms; melancholic features describe a depressive subtype with particular symptoms like profound anhedonia, early morning awakening, and psychomotor changes. Understanding seasonal pattern helps guide treatment decisions, such as considering light therapy or seasonal-focused strategies, and it may influence choices around antidepressants and mood stabilizers in bipolar presentations.