Seasonal affective disorder, or SAD, is a type of depression that affects a person during the same season each year.

季节性情绪紊乱症，简称SAD (Seasonal Affective Disorder SAD)，是一种每年固定季节影响人们的抑郁症。

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Depending on the type and severity of your depression, a mental health professional may recommend short-term therapy, lasting 10 to 20 weeks, or longer-term therapy.

根据抑郁症的类型和严重性，一个心理健康的专家也许会推荐短期的疗法，持续10到20周，或更长的疗法。

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Type D personality, first defined in the '90s, is characterized by feelings of negativity, depression, anxiety, stress, anger, and loneliness.

D型性格，在90年代首次定义为：具有负面思想，失望，不安，压力，愤怒和孤独思想的人。

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And if this is a depression-type problem, then exiting from quantitative easing may still be years away.

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Most commonly, the mood disorder accompanying the schizophrenic features is either bipolar disorder (bipolar-type schizoaffective) or depression (depressive-type schizoaffective).

CNN: Schizoaffective disorder

"When the stimulus package came up for a vote, I felt that it was indispensable to vote 'aye' in order to avoid the possibility of a 1929-type depression, " Specter said Tuesday.

CNN: Specter says party switch driven partly by desire to keep seat