The symptoms of depression almost always include persistent low mood throughout most of the day, and patients generally lack interest or pleasure in all activities. Patients may exhibit psychomotor agitation or retardation, and experience fatigue, weakness, and feelings of inadequacy. They may feel that their lives are worthless and meaningless, have feelings of self-reproach or guilt, and suffer from poor concentration and indecisiveness. Recurrent thoughts or behaviors of suicide may occur, and some patients may even make specific plans for suicide. Therefore, these are the primary symptoms of depression. Some patients may present primarily with physical symptoms, such as dizziness, headaches, palpitations, frequent or urgent urination, and gastrointestinal discomfort. It is important to conduct relevant examinations to avoid misdiagnosis.