Mood disorder (Mooddisorder), also known as affective disorder (afleetivedisorder), bipolar disorder (bipolar I disorder: as long as there are manic episodes or mixed episodes that meet the diagnostic criteria at present or in the medical history, they are bipolar I.), is one of the common psychiatric disorders. Bipolar II disorder: refers to the presence of recurrent depressive episodes and mild manic episodes, but never manic episodes), is one of the common psychiatric disorders. Mania and depression happen to be the opposite of two different groups of affective disorders and can occur separately in a single patient. The main clinical symptoms of manic state are elevated state of mind, racing thoughts and psychomotor excitement. 1, emotional high patients show relaxed, happy, exultant, complacent, joyful demeanor, as if there is no trouble on earth. The high state of mind is often vivid, distinctive, coordinated with the inner experience and the surrounding environment, and has an infectious effect. Patients often describe themselves as “overjoyed” and “life is full of sunshine and splendor”. Emotional response may also be unstable, irritable, can be due to small things or opinions were rejected, the requirements are not satisfied and stormy. 2.Thinking Runaway The association process is obviously accelerated, talking a lot of sound more, gushing, talking or even open-mouthed. Due to the distraction of attention, the topic is often shifted with the situation, and the concept of fluttering and the phenomenon of phonological association may occur. Patients often have the experience of “brain enlightenment”, “getting smarter”, “tongue and thought race”. 3, self-evaluation is too high on the background of high state of mind, feel good about themselves. Feeling that the body has never been so healthy, never so energetic, quick-witted. Often overestimate their own talent, status, pretentiousness, can appear exaggerated ideas. 4.Activity increase Manic patients have wide interests, like to make a lot of noise, more interaction, close to the opposite sex, take the initiative to get close to people, and do not know the people at first sight. They are amusing, nosy and like to fight. Lack of thoughtfulness in all things, and when the mood takes them, they go on a buying spree and spend money indiscriminately. Behavior is rash and reckless, and in severe cases, destructive or aggressive behavior may occur. Although the patient is talking a lot, moving a lot, and even hoarse, but no fatigue, the energy seems unusually strong. 5. Appetite and libido are generally increased, and the need for sleep is reduced. Depression The core symptoms of depression include low mood, lack of interest and lack of pleasure, which can be accompanied by somatic symptoms and suicidal behavior. Depressed patients have no sense of enjoyment, have a significant decrease or lack of interest, are sad all day long, feel infinitely sad, and are self-conscious, with some patients experiencing anxiety and fear mixed in with their sadness. Patients are pessimistic, think they are useless, and have thoughts of self-blame and self-guilt. Some patients become suicidal. The patient seldom opens his mouth voluntarily, speaks slowly, realizes that his thinking activity is extremely slow, and has difficulty in thinking; the content of his thinking is mostly related to the sadness emotion. Patients often suffer from insomnia, early waking, or sleep all day, bedridden, loss of appetite and libido, weight loss, fatigue, constipation, pain or discomfort in the trunk, tightness in the chest, shortness of breath, sighing, dry mouth and bitterness, loss of appetite, nausea, vomiting, abdominal distension, constipation is common. While headache, dizziness, palpitations, panic, sweating, chest tightness, hot and cold skin, sensation of hair and tingling sensation, frequent urination, urgency of urination and other symptoms are mostly seen in mild depression. The somatic complaints and suspicious symptoms, pain or discomfort in various parts of the body are also more common in mild depression. The patient likes to live alone in a corner, lying in bed with little movement and speechlessness, and moves extremely slowly, and in severe cases, reaches the degree of wooden stiffness.