Anxiety disorders are the most widespread of emotional disorders. They affect millions of people every year, and cause their victims to suffer from tremendous worry and nervousness for no apparent reason. Clues as to why anxiety disorders develop can be found in one's genes, psychological make-up, life experiences, or biochemical changes in the brain.

忧郁症是最普遍的一种情绪失调。它每年都会困扰无数的人，患者无缘无故感到极度焦虑和紧张。忧郁症发病的原因可从一个人的基因、心理素质、生活经历或脑内的生化改变中找到线索。

(短文节选,本期开始连载： “躁”化弄人)