F32 vs F38
F38 — Other mood [affective] disorders (recurrent brief depressive disorder)
Distinguish a depressive episode (or recurrent depressive disorder) from recurrent brief depressive disorder using individual episode duration.
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Show overlap — what both share
Both involve a genuine depressive symptom cluster (low mood, anhedonia, poor sleep, guilt, poor concentration) recurring over time, with real recovery between episodes.
Show decisive evidence
- F32/F33 require each individual episode to last at least about two weeks.
- F38.1 (recurrent brief depressive disorder) involves episodes recurring roughly monthly, each lasting only a few days — well under the two-week minimum.
- The symptom content can be identical; duration of each individual episode is what decides the classification.
What weakens F32: Evidence that each episode individually lasts two weeks or more weakens F38.1 and favours F32/F33; evidence that episodes are consistently brief (days, not weeks) weakens F32/F33 and favours F38.1.
Show duration / course
This boundary is defined almost entirely by duration: F32/F33 need roughly two weeks or more per episode; F38.1 involves episodes of only a few days, recurring about monthly.
Show exclusions / context
A vignette's stated frequency and per-episode duration are the decisive facts — the presence of a full symptom cluster during each episode does not, by itself, indicate which category applies.
Show information still needed
The exact duration of each individual episode, not just that a depressive symptom cluster recurs.
Show the common trap
Classifying by symptom content and recurrence alone, without checking whether each individual episode actually meets the two-week minimum duration.
Mini challenge — practise this distinction
Apply the discriminating evidence above to a fresh case before checking the full feedback.