Depression is a common mood disorder that can be caused by a variety of reasons and is characterized by significant and persistent depression, which is disproportionate to its situation and, in severe cases, by suicidal thoughts and behaviors. If you have most of the following symptoms, depression is highly suspected and counseling clinic consultation is recommended. Typical symptoms of depression include depressed mood, slowed thinking, and reduced volitional demands, i.e., the “three lows”. Among them, depressed mood is the core symptom, and it can change from morning to evening. 1.Low mood or depressed state of mind From mild mood, distraction, sadness, distress to pessimism and despair. The whole day is not happy, always sorrowful and sad, and even pessimistic and despairing. Perhaps Lin Daiyu is a typical example. But there are also patients who show anxiety, nervousness and irritability. 2. Diminished interest The patient loses interest in daily activities, has no pleasure in activities that can be enjoyed, and is even indifferent to his or her hobbies. A person who is not even interested in the things he likes to do should be highly suspicious of the existence of depression. 3. Decreased energy or loss of energy The patient’s energy decreases significantly and often feels tired for no reason. At first, the patient may show a lack of energy, fatigue, passive mechanical participation in some daily activities, with the aggravation of the disease, more listless, do anything to feel the strain, loss of initiative and enthusiasm, in serious cases, can not continue to participate in work, or even closed. 4, psychomotor retardation or agitation Slow thinking, difficulty in association, slow reaction, memory, attention loss. Reduced activity and speech, low voice, simple answers, slow walking and movement, bedridden or living alone in one place. In severe cases, no speech, no food, no movement, and may reach a state of xerostasis. In contrast, the agitated patient’s brain repeatedly thinks about something without a purpose, the content of the thought is unstructured, and the brain is constantly under tension. However, because of the inability to focus on a central problem, the efficiency of thinking is reduced, and creative thinking is not possible. In terms of behavior, the patient is irritable, nervous and agitated, sometimes unable to control his movements, but does not know why he is irritable. 5.Appetite, weight and sleep symptoms Most patients have decreased appetite, resulting in weight loss, and a few patients have increased appetite; early awakening is a typical biological symptom of depression, which can also be manifested as difficulty in falling asleep, shallow sleep, easy to wake up, poor night sleep leading to decreased energy during the day, reduced activity, and drowsiness throughout the day, but unable to sleep, which is very painful. 6, suicidal ideas and behaviors Patients are painfully blamed for some of their past minor faults or mistakes, believing that some of their actions have made others feel disappointed, and that their illness has brought a huge burden to their families and society. In severe cases, the patient may reach the level of delusion about his own faults. 7.Self-blame and self-crime Suicide is the most serious and dangerous symptom of depression, and is also the main cause of death of depression patients. Suicide due to depression accounts for about 80% of all kinds of suicides. Suicidal thoughts can appear in the early stage of the disease and its development, so one should be vigilant. As the symptoms worsen, suicidal thoughts become stronger and stronger, feeling that life is a burden and life is not worth staying, so they try every possible way to end this life and seek liberation. Extended suicide is also a common form of suicide in depression, in which the patient feels that he or she cannot live in the world, and in order to spare his or her loved ones from this “pain”, the patient will kill his or her loved ones and then commit suicide. 8, other symptoms Depression can also have a variety of other symptoms, including a variety of physical complaints, common complaints include headache, neck pain, low back pain, muscle cramps, chest tightness, rapid heartbeat, frequent urination, sweating, nausea, vomiting, swelling of the throat, dry mouth, constipation, burning sensation in the stomach, indigestion, flatulence, blurred vision, and painful urination.