Depression can make a person feel unusually sad, worthless, uninterested in activities that used to be fun, restless or even suicidal.

患抑郁症的人通常会感到异常忧伤、觉得人生毫无价值、对原本感兴趣的活动失去兴趣、烦躁、甚至会产生自杀的念头。