ack has experienced recurrent episodes of major depressive episodes. In the intervals between the episodes, he does not seem to return to "normal." In fact, during those periods, he has been diagnosed as dysthymic. Jack's condition is referred to as _______________.

A.
Bipolar disorder

B.
Persistent Depressive Disorder

C.
Atypical Depression

D.
Dysfunctional Dysthymia