A girl, after being scolded by her parents, suddenly closed her eyes tightly and fell to the ground, after which she often had recurrent seizures and visited the neurology department several times to rule out epilepsy; a boy was nervous and could not walk when he was given an injection, but no problem could be detected in his legs; a class had collective “food poisoning” but only one or two students were found to have evidence of food poisoning; in the summer, the students had a collective “heat stroke” in the playground. These seemingly physical illnesses, but do not correspond to the characteristics of real physical illnesses, are actually due to psychological factors and are called hysteria, which is also known as dissociative (conversion) disorder in international terminology. The occurrence of dysthymia in children is often related to their poor personality and family environment factors, aggression, tension, anger, sudden unfortunate events, bad psychological cues, etc. can lead to attacks. The first seizure has an obvious trigger, while subsequent seizures do not necessarily have an obvious trigger and may occur under the suggestive effect of others talking about their seizures or their own recollection of the seizure experience. Because children are more suggestible, collective seizures can also occur. For example, once a child in a lower elementary school class suddenly had abdominal pain in class after eating unclean food and was concerned by the teacher and sent to the office for a break, resulting in a succession of a dozen students in the class with similar symptoms. The clinical manifestations of dysthymic episodes are varied, and in general they can be divided into two categories: somatic dysfunction and psychiatric symptoms. Somatic dysfunction can be: convulsions, but can be distinguished from epilepsy, such as seizures will not bite tongue, fall, no incontinence, no hypoxia, normal facial color, etc.; “paralysis” (to the lower extremities at the same time paralysis is common, but the occurrence of sudden, no signs of neurological damage, and rapid recovery), blindness, loss of voice, deafness, etc. These physical disorders can all be found in psychiatric disorders. All of these physical disorders can have psychiatric causes, and the child’s attitude toward these physical disorders is not eager and can improve quickly with suggestive treatment. Psychiatric symptoms can have emotional outbursts, manifested as bawling, moving limbs around while crying, or suddenly crying and laughing, exaggerated movements and expressions, etc. There are also children who suddenly faint when induced by psychiatric factors. Although there are many manifestations of hysteria, they have some common characteristics: no substantial lesions, symptoms cannot be explained by physical illness; symptoms change rapidly and are dramatic; self-centeredness, the usual character is so, but when the attack also wants to attract attention, with exaggerated and performative colors; strong suggestibility, the attack by suggestion, symptoms aggravated, and by suggestion and get better. Due to the strong suggestibility of children, living in a group, collective hysterical episodes sometimes occur. The diagnosis of hysteria needs to be carried out with extra care by a professional doctor. Once the diagnosis is clear, treatment is not difficult, mainly psychotherapy, the main points of which are to pay attention to cultivating good character in children on weekdays, eliminating triggering factors, such as avoiding tension and intimidation, caring more about the child rather than caring only when the child has an attack; using suggestion therapy during an attack, and parents should not show excessive anxiety and concern for the child. For children with severe and persistent symptoms or who are too excited during seizures, a small amount of sedative or psychotropic medication can be given.