| Disorder | Manic Symptom Criteria | Depressive Symptom Criteria |
|---|
| Major depressive disorder | No history of mania or hypomania | History of major depressive episodes (single
or recurrent) |
| Dysthymic disorder | No history of mania or hypomania | Depressed mood, more days than not, for
at least 2 years (but not meeting criteria for a major depressive episode) |
| Bipolar I disorder | History of manic or mixed episodes | Major depressive episodes typical but not
required for diagnosis |
| Bipolar II disorder | One or more episodes of hypomania;
no manic or mixed episodes | History of major depressive episodes |
| Cyclothymic disorder | For at least 2 years, the presence
of numerous periods with hypomanic symptoms | Numerous periods with depressive symptoms
that do not meet criteria for a major depressive episode |
| Bipolar disorder not otherwise specified | Manic symptoms present, but criteria not
met for bipolar I, bipolar II, or cyclothymic disorder | Not required for diagnosis |