Always inexplicable temper, in the clinic is mainly with irritability, but also said that the patient is manifested as a result of some small things appeared strong emotional expression, often lasts for a relatively short period of time. This situation is more common in depression, mania, as well as some neurosis or serious mental disorders. Especially in the manic patients, patients are often mainly irritable, easily because of some small trivialities, serious times will have impulsive, aggressive behavior or words. Patients suffer for this, so for such patients should be systematic and standardized treatment. In addition, patients with depression may also appear inexplicable temper, because patients are depressed and unhappy, feel physically and mentally depressed, feel that there is no point in living, rather than die, so in the process of communication with the family, because they can not get understanding and attention, so easy to lose their temper, irritable. For patients with severe mental disorders, because of the influence of hallucinations or delusional content, they may become irritable, lose their temper, or even have violent and impulsive behaviors.