Boundary Comparison Lab · F30-F39

Compare any two F30-F39 categories

Pick two categories and see what actually discriminates them: overlap, decisive evidence, duration/course, exclusions, and the common trap. This is a separate learning mode from the Differential Decision Lab — here you are studying a boundary directly, not making a single timed decision.

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• F30 vs F31

  Distinguish a single manic episode from bipolar affective disorder using documented episode count, not the current episode's severity or symptom picture.

• F31 vs F33

  Distinguish bipolar affective disorder from recurrent depressive disorder using the presence or absence of any documented elevated-pole (manic, hypomanic, or mixed) episode.

• F31 vs F34

  Distinguish bipolar affective disorder from cyclothymia using whether either pole has ever reached full-episode severity.

• F32 vs F33

  Distinguish a single depressive episode from recurrent depressive disorder using documented episode count.

• F32 vs F34

  Distinguish a depressive episode from dysthymia using the duration-for-severity trade-off, not simply how long low mood has been present.

• F32 vs F38

  Distinguish a depressive episode (or recurrent depressive disorder) from recurrent brief depressive disorder using individual episode duration.

Only comparisons involving a currently available category appear here. As more categories are authored, more comparison pairs will appear.