The symptoms of depression mainly include: 1. Core symptoms: The core symptoms mainly include: the first symptom is depressed mood, this kind of patients always feel happy and sullen; the second symptom is diminished interest, there is no interest in anything. Some people will say I used to have a lot of hobbies are not willing to do, I have a favorite thing are not willing to do, I have a favorite person think about it is not happy; the third for the weakness, this patient onset, are feeling tired, fatigue, weakness, do not want to do anything; 2, somatic symptoms: depression onset, somatic symptoms are mainly manifested in a series of physical discomfort, common symptoms is gastrointestinal symptoms, such as anorexia, decreased appetite. Therefore, depressed patients will lose weight significantly. Some depressed patients, atypical depressed patients, may have overeating behavior when they are depressed, eat a lot and then have a sense of low self-esteem and self-doubt. But most of them have decreased appetite, and then there is gastrointestinal discomfort, such as pain, stomach pain, bloating, of which the most common symptom is pain; 3. Psychological symptoms: psychological symptoms are mainly manifested in low self-esteem, self-blame, with this negative concept of suicide. Most depressed patients have symptoms of anxiety. Another core symptom of depression is morning heaviness and evening lightness; 4. Early awakening: Early awakening is also a core symptom of depression, and patients wake up 2 hours earlier than usual in the morning. If a patient has symptoms with morning heaviness and late lightness and early awakening, it is highly suspected that depression is occurring.