Depression is not a generalized sense of a bad mood, where a person is depressed but gets better after two days, this is not depression. There are nine main symptoms of depression, as long as at least four of these symptoms exist below, and they persist for two weeks and cannot be relieved, and affect the normal life in general, it is necessary to consider whether you are suffering from depression, and promptly seek medical consultation with a specialist. 1.Loss of interest, no sense of pleasure 2.Loss of energy, often have a sense of fatigue for no reason 3.Slow reaction 4.Low self-esteem, often self-blame or guilt 5.Difficulty in association or self-awareness of thinking, and difficulty in deciding some daily chores 6.Recurring thoughts of death or suicidal, self-injurious behavior 7.Sleep disorders 8.Lower appetite or significant weight loss 9.Loss of sexual desire Most Depression may not be mainly emotional symptoms, but rather headache, dizziness, abdominal distension, body pain and other physical symptoms first manifested, which causes many patients often in large general hospital examination and consultation, often can not find out what the cause. In addition, many patients are reluctant to go to psychiatric hospitals and believe that they may be suffering from psychiatric disorders, resulting in many patients not receiving timely formal treatment. In short, the incidence of depression is high, the recognition rate is low, and the consultation rate is low.