Persistent Depressive Disorder (PDD)
What is Persistent Depressive Disorder (PDD) Persistent depressive disorder is a mental health condition. PDD causes symptoms of low-level depression for 2 years or longer. It may also be called long-term (chronic) depression or dysthymia. PDD may include episodes of more severe depression that last for about 2 weeks (major depressive disorder or MDD). PDD can …