1.Does depression recur? One of the characteristics of depression is episodic, i.e., it can come on intermittently. According to research evidence, about 15-50% of people have one episode in their lifetime according to American psychiatric guidelines, and about 50% of patients will have recurrent episodes. There is another feature: the more previous episodes, the higher the risk of future relapses. Therefore, we say that the treatment of depression is not only to stop this episode, but also to maintain the treatment for a long period of time to prevent recurrence and to avoid frequent and multiple episodes. With each episode, treatment becomes more difficult and the recovery time from symptoms may be longer. There may be more residual symptoms. Therefore, in depression, it is very important to reduce the number of relapses. 2.Is high social pressure and fast pace of life the reason for the onset of depression? High social pressure and fast pace of life is an important precipitating factor. Depression, like many other diseases, has both internal and external causes. The internal causes may be related to the genetic background, etc. There are also many external causes, such as the stress of the surrounding environment, which can be interpreted as stress, and is chronic and unpredictable, such stress plays an important role in triggering the onset of depression. 3. What are the causes of depression? The exact cause of depression is not yet known. After the research of the society and researchers in different countries, the more recognized view is that depression is a type of disease closely related to genetics and is a complex genetic disease. It is a complex genetic disorder. It is caused by the interaction of genetic factors and some external environmental factors such as stress and stress. If you have a genetic background and a family history, you will not develop the disease if you do not encounter external environmental factors to stimulate or trigger the disease. On the contrary, if there is no such inherent genetic quality, the onset of the disease will not be caused by the action of external environment alone. Therefore, it must be the result of the interaction of internal and external factors. Sometimes this pathogenesis is also called gene-environment interaction.