The period of normalcy is seen between two psychosis. The diagnosis is:

Manic depressive psychosis was the older name for bipolar disorder. In bipolar disorder, in between the episodes, patient is usually normal. Bipolar disorder: Episodes of - both mania (continuing or at least 1 week) and depression (bipolar I disorder) -both hypomania (continuing or at least 4 days) and depression (bipolar II disorder)