<prompt> Dysthymia is ?Chronic depressionChronic maniaBipolar disorderPersonality disorder  <response>: Ans. A. Chronic depressionPersistent depressive disorder DysthymiaDepression may run a chronic course over years with fluctuation of mood interposed with symptom free intervals less than 2 months.If symptoms persist for more than 2 years, they are referred to as persistent depressive disorder or dysthymia. 