1. Some people will feel like a different person at a certain stage. Expression for talking more, feel their reaction and thinking faster, uncontrolled spending or irrational investment, emotional euphoria, arrogance / bragging, do not sleep or sleep needs very little, abnormally high energy, daily engaged in all kinds of activities to increase, temper becomes a little fire on, impulsive, attention is very easy to be attracted to irrelevant things. This is often a manifestation of mania or hypomania. Generally speaking, with four of the above, and not the original characteristics of the person, the time up to four days is highly suspected of this kind of disease. 2, alternating depression and mania, medically known as bipolar disorder or bipolar disorder, commonly known as bipolar disorder. Because of its cyclic, sudden high and low characteristics, it is a different disease from the general depression (only low, never high). 3.Diagnosis of mania/light mania is decided according to the severity of the symptoms, and the influence and damage to the individual’s work, life or to the family is big for mania, and the influence is not big for light mania. 4, these patients need to take emotion stabilizers to increase sleep and stabilize overly high moods, and cannot take antidepressants, except for a short time during the depression period. 5, depressed patients such as taking antidepressants transformed into manic state, can directly suggest that the patient belongs to the disease characteristics of bipolar disorder, rather than simple depression, that is, bipolar depression, then need to stop the antidepressants in time, plus the use of mood stabilizers. A truly depressed person will not turn into a manic state no matter how they take antidepressants. However, if a person is currently depressed and has never been manic, he or she can only be treated as depressed, and the diagnosis needs to be revised and the treatment plan needs to be modified after taking medication to appear manic. 6, the patients of this kind of disease themselves, often feel good about themselves, do not think they have a disease, often think they have never felt so good, but out of this disease period, its destructive power to the family is quite large, such as excessive investment, consumption, reckless behavior without considering the consequences, often bring heavy economic burden and pain to the family. 7, If not actively treated, the patient will easily transform into a significant depressive state after the manic state ends, turning into the other extreme with low mood, pessimism and suicidal thoughts. Like a fluctuating curve, after the apex, it gradually slides down to the bottom, and then continues to cycle back and forth. This cyclic character is the essence of this disease. 8, people with a family history of mental illness are more likely to get this disease. 9, the painter Van Gogh is very famous bipolar disorder / bipolar disorder patients, during the manic episodes, created a lot of sky is extremely imaginative works, such as “Starry Night”. During his depression, he created works like “The Raven in the Rye”, which were full of gloomy and disturbing images, and at the same time, he committed suicide. 10, Many extremely talented people suffer from this disease. 11.Patients with hyperthyroidism are likely to have such symptoms. So manic patients should have their thyroid hormone levels checked. It is necessary to treat the thyroid and take emotional stabilizers to control manic symptoms at the same time. 12.There is a tendency of relapse in this disease, and maintenance treatment for more than one year is important.