People with dysthymia may also experience one or more episodes of major depression during their lifetimes .
心境恶劣患者在其一生中,也会经历一次或更多此的重度抑郁。
At one end is severe depression , above which is moderate depression and then mild low mood , which many people call " the blues " when it is short-lived but is termed " dysthymia " when it is chronic .
Bipolar disorder , also called manic-depressive illness , is not as common as major depression or dysthymia .
双相情感障碍,也叫做躁郁症,并不像重度抑郁症或心境恶劣一样普遍。
Pessimistic personality.people who have low self-esteem and a negative outlook are at higher risk of becoming depressed . These traits may actually be caused by low-level depression ( called dysthymia ) .