Crying and laughing disorder is a condition in which the patient himself cannot control his emotions, sometimes laughing and sometimes crying, and is unpredictable. This disease may be due to problems in the brain and can be treated in the neurology and psychiatry departments of hospitals. The cause of crying and laughing disorder is mainly a disorder of brain function, abnormal mental activity, and may also be due to the effect of certain stimulants. Madness is a common cause of crying and laughing disorder. It is characterized by mental hyperactivity, mania, cursing and destroying things, moving and getting angry, and even killing people with knives. Most young adults suffer from this disease. The diagnosis of madness caused by crying and laughing disorder: 1, there are mental confusion, crying and laughing disorder, delusional singing, mania, not avoiding relatives, hitting and destroying things and other mental, linguistic and demeanor abnormal state. 2.There are triggering factors such as emotional stimulation, will not attempt or traumatic brain injury, or family history. 3.Excluding those due to drug causes. Madness typology: phlegm and fire internal disturbance 1, mental symptoms: uncoordinated excitement; thought association disorder; contradictory emotions; emotional irritability; inattentiveness. 2. Somatic symptoms: constipation, redness of urine, redness of the face and eyes, and preference for cold drinks; red or vivid tongue, yellow thick or yellow greasy coating; slippery and strong pulse. Qi stagnation and blood stasis 1. Mental symptoms: childish or stupid behavior; broken thinking; hallucinations and delusions; unstable mood; excitement and agitation. 2. Somatic symptoms: discomfort around the body, rough skin, dull complexion, dysmenorrhea, menorrhagia, scanty menstruation with dull color or blood clots; purple tongue or petechiae, little moss, varicose veins under the tongue bruised with blood; astringent or stringent pulse. Yin deficiency fire 1, mental symptoms: the condition is prolonged or occasionally impulsive; hallucinations, delusions; emotional blandness with occasional irritation; thought association disorder; solitary withdrawal. 2, physical symptoms: dry stool, short red urine, red cheek, dry mouth without thirst; red tongue without moss, or reddish tongue with peeling moss; fine pulse.