Melancholia is a kind of psycho-disease nearest from us with the character of high illness rate, high recrudescence rate, high suicide rate and heavy social burden etc.

• 抑郁症是一种离我们最近的心理疾病，其患病率之高，跨度之大。具有高发病、高复发、高自杀率、高致残率和社会负担沉重等特点。