■ Depression, also known as "chilling", is a mental illness characterized by depression. Its clinical manifestations are mild, and patients have a painful experience of its appearance. People who are slightly heavier can show depression, pull a long face, sigh, inferiority and so on. Some patients are often accompanied by neurosis symptoms, such as inattention, memory loss, unresponsiveness, insomnia and dreaminess. Patients with major depression will have pessimism, despair, self-blame, hallucinations, loss of appetite, sharp weight loss, functional decline, accompanied by serious suicide attempts, and even suicidal behavior. It poses a serious threat to human health and must be paid great attention to and treated in time.

■ Symptoms: Patients with mental retardation have obvious psychomotor inhibition, difficulty in association, decreased speech, low voice and slow movements. Sometimes a person behind closed doors, indifferent to family, has almost become the most popular spiritual civilization disease in high-pressure society in recent years. Three out of every 100 people suffer from depression, and there are many cases of physical illness or even self-destruction caused by depression. Depression is a disease involving physiology, psychology, emotion and thought. It not only affects normal life, but also affects the feelings between people and their views on things. Depression is different from temporary depression. Without effective treatment, symptoms can last for weeks, months or even years. Its symptoms include depression, which is not exclusive to depressed and unhappy introverts. Emotional ups and downs are also the root cause of illness. People who work hard and gain popularity on weekdays may also get sick and depressed. In fact, it is a very common experience in life. Occasionally lonely, depressed or in a bad mood, coupled with utilitarian interpersonal relationships and indifference, make the mental load vulnerable in such a nervous state.

■ The purpose of treatment is to relieve the symptoms of depression. Effective treatment can relieve symptoms for more than six months and restore the original normal life function. According to the treatment effect, the symptoms will be relieved to varying degrees, and some may only be partially relieved. Patients with depression will have considerable differences and therapeutic effects due to the severity of their illness. According to the needs of different patients, antidepressant therapy, psychotherapy or comprehensive therapy will have different effects.