High fever convulsions are a type of convulsion, a state of convulsion that occurs in infancy and childhood and is induced by fever. 1. Convulsions: Convulsions have a variety of medical definitions, the more common of which refers to abnormal involuntary twitching of skeletal muscles and causing joint movements, mostly generalized and symmetrical, and can be seen at any age. The causes of convulsions include abnormal discharges of motor neurons in the brain (e.g., generalized epileptic seizures, febrile convulsions), non-cerebral dysfunctional muscle twitching (e.g., hypocalcemia leading to tardive dyskinesia), and hysterical convulsions. 2. Fever convulsions: fever convulsions are known as febrile convulsions and febrile convulsions in medicine, which is a type of convulsions. It is a kind of fever-induced convulsive state unique to infants and young children, which does not belong to epilepsy and is more common in clinic. The first seizure often occurs between 1 month and 6 years of age, in the upper respiratory tract infection or other non-intracranial infections in the early stage of the disease, when the body temperature rises above 38 ℃ suddenly occurred convulsions. If the above symptoms appear, you should consult a doctor in time and standardize the diagnosis and treatment to avoid delaying the condition.