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Table 1 Minimum requirements for diagnosis of selected bipolar subtypes in DSM-5

From: The impact of treatment decisions on the diagnosis of bipolar disorders

Subtype At least one full manic episode At least one full major depressive episode At least one full hypomanic episode At least one subthreshold hypomanic episode
Bipolar I disorder Yes No No No
Bipolar II disorder No Yes Yes No
Short-duration hypomanic episodes (2 to 3 days) and major depressive episodes (other specified bipolar and related disorders) No Yes No Yes (2 episodes of short-duration hypomania)
Hypomanic episodes with insufficient symptoms and major depressive episodes (other specified bipolar and related disorders) No Yes No Yes