Depression is a common psychiatric disorder, whose main manifestations are low mood, lack of interest in doing things, reduced sense of self-evaluation, and fatigue. If you suspect that you have depression, you can identify it by the following methods: 1. Preliminary identification can be done with a self-test scale, such as the Depression Self-Measurement Scale, which has a total of 20 questions and can initially determine whether there is a possibility of depression, if the score is relatively high, especially if it is more than 80 points indicating that the possibility of depression is very high. If there is a possibility of depression, it is necessary to go to the hospital to find a professional psychiatrist for further diagnostic review.2. In-hospital doctors can also assess patients through scales, but through more specialized psychiatric scales, such as the Beck Depression Inventory and the Hamilton Depression Inventory, in which the doctor will do a detailed psychiatric consultation to determine whether the patient is suffering from depression. If depression is diagnosed, it must be treated with medication in full doses and courses, and most depressed patients will recover well.