Dysthymic disorder, or dysthymia, is characterized by long-term (2 years or longer) symptoms that may not be severe enough to disable a person but can prevent normal functioning or feeling well.

心境恶劣障碍，也叫做恶劣心境，以长期(两年或更长)但是较轻的症状为特色。它并不一定使个人致残，但是能使个人正常机能受损或不能感到心情舒服。