How to determine whether a person is suffering from depression? There are three core symptoms of depression, the first is depressed mood, that is, his mood is particularly poor, always happy, no matter whether there are good things every day, he will not be happy, not happy, this is the first symptom. The second point is that the interest is obviously reduced, or even disappeared, for example, he used to like shopping malls, used to like sports, used to like drinking, all these things he no longer likes. The third is psychomotor block, that is, he basically does not like to move, and can even lie down all day. Some patients can even lie at home for months without getting up and without going out. Of course, there are also many physical symptoms, such as obvious sleep disturbance, and the sleep disturbance of depressed patients is the whole process, from the first sleeplessness, easy to fall asleep and dream, very shallow sleep, and easy to be awakened, called superficial sleep, dreamy. The second major physical symptom is appetite. The appetite of a depressed patient is severely reduced, so he almost does not want to eat, because his whole body function is very poor and very low, so he does not eat or rarely eats, and this results in significant weight loss. The third physical symptom is dry stool, such people have severe constipation, and sexual function is also reduced. The onset of depression is related to the seasons, and often the winter and spring are the high incidence seasons. Because there is less sunshine and less light in winter and spring, it is easy to get depression. In addition, winter and spring can easily lead to colds and colds, and pregnancy can cause some abnormalities, so children born in winter and spring are at high risk of depression. Children of depressed parents are at high risk of depression. Of course, the development of depression is not only a unilateral factor of genetics, but also a combination of factors. Genetics is a decisive factor. Generally, if a parent suffers from depression, the risk of children suffering from the disease is definitely higher than other people. The second is that the reason why a person is depressed, there must be damage to brain function, especially like 5-hydroxytryptamine, dopamine, norepinephrine, which we call monoamine neurotransmitter concentration is declining, so that his mood is not high, leading to some of his other depressive symptoms. There are also some psychological and personality factors, such as his personality is relatively introverted, more sensitive to many things, more concerned, and then too demanding of himself, in addition to his own ability to resolve the psychological stress is very poor, even he does not know what methods can help himself relax, these factors can lead to the occurrence of depression.