How long must depressive symptoms persist to be classified as a major depressive episode?

How long must depressive symptoms persist to be classified as a major depressive episode?

• A. Two months
• B. Two weeks
• C. Two years
• D. One year

Answer: (B)

Depressive symptoms must last for at least two weeks to be considered a major depressive episode. This two-week minimum is the threshold used because it differentiates a brief period of sadness from a clinically significant pattern of symptoms that interferes with functioning. During that two-week window, a person typically must experience several symptoms, including either a depressed mood or a loss of interest or pleasure, plus other associated signs (such as changes in sleep, appetite, energy, concentration, or feelings of worthlessness), reaching a total of five or more symptoms. The duration can extend beyond two weeks, and the episode may resolve with treatment or on its own. Shorter durations, like two months or one year, do not meet the criterion for a major depressive episode and point to different patterns or diagnoses.

Depressive symptoms must last for at least two weeks to be considered a major depressive episode. This two-week minimum is the threshold used because it differentiates a brief period of sadness from a clinically significant pattern of symptoms that interferes with functioning. During that two-week window, a person typically must experience several symptoms, including either a depressed mood or a loss of interest or pleasure, plus other associated signs (such as changes in sleep, appetite, energy, concentration, or feelings of worthlessness), reaching a total of five or more symptoms. The duration can extend beyond two weeks, and the episode may resolve with treatment or on its own. Shorter durations, like two months or one year, do not meet the criterion for a major depressive episode and point to different patterns or diagnoses.