Generalized tonic-clonic seizures are the most familiar form of seizures. During the seizure, the patient suddenly loses consciousness, falls to the ground, the whole body muscles stiffen, the head tilts back, the lower limbs straighten, the upper limbs bend with force; screaming, breathing stops temporarily, the face and lips turn purple, which is called the tonic phase in medical science. Then enter the clonic phase, which is characterized by rhythmic jerking of the whole body, and may appear lips or tongue biting; incontinence of urine and foaming at the mouth may occur. After the clonic phase, the patient often falls into a comatose state and wakes up after a short period of more than 10 minutes or several hours. However, some seizures are not the above-mentioned manifestations and are easily ignored by patients and their families, such as: 1. (1) The onset of seizures is usually after the age of four to five years, and they occur when the patient is awake, when the activity in progress suddenly stops, but does not fall, and the eyes straighten; (2) Aphasic seizures usually last only a few seconds, and there may be several to a dozen seizures a day. (2) Myoclonic seizures (2) Myoclonic seizures: This is a common form of seizure in children and adolescents. (1) The seizure is a sudden, rapid and powerful jerking of a part of the body, mainly caused by the sudden contraction of muscles in these parts; (2) It can be manifested as a sudden nodding, bending or leaning back, or the whole body can suddenly lean back or fall to one side. Sudden contraction of limb muscles, often manifested as sudden shaking of the limbs. (3) Sometimes after a myoclonic seizure, there is another seizure a few seconds or minutes later, several times in a row. Some patients can have as many as dozens of seizures a day; (4) myoclonic seizures are often combined with other types of seizures. (3) Atonic seizures: a more specific type of seizure. (1) The limbs do not twitch during the seizure, but the muscles suddenly lose tension, showing a sudden general weakness and inability to maintain a normal posture. If the patient is standing at the time of seizure, he/she shows sudden head bowing, two shoulders dropping, fingers spreading, knees session bending, followed by falling; if seizure occurs while sitting, he/she shows head bowing without necessarily falling; if seizure occurs while lying down, it is often not visible because he/she will not fall. (2) There is a brief loss of consciousness during the seizure, but it quickly recovers. The patient can get up immediately after falling. (3) Sometimes some patients can show continuous seizures, showing a sudden fall, stand up, fall again, stand up again ……, repeated several times to stop the seizure. (4) Atonic seizures are often combined with other types such as myoclonic seizures, and some patients may also be accompanied by mental retardation. 4, simple partial seizures: mostly caused by a part of the brain lesions, characterized by a clear mind during the seizure, the performance of the seizure completely perceived; performance varies depending on the location of the lesion. (1) Motor seizures: the twitching of an upper or lower limb or any part of the body, which can be extended from one limb to other limbs. (5) Sensory seizures: numbness and pins-and-needles sensation in one part of the body; some may show audio-visual symptoms, such as flashing lights in front of the eyes, hearing harsh sounds, etc.; others show olfactory and taste hallucinations, such as smelling unpleasant or unpleasant odors, and having a “metallic taste” in the mouth that seems sour, sweet, or bitter. “Occasionally, some patients exhibit vertigo, and their bodies seem to be falling down in the air or floating on a boat. (6) Vegetative seizures: often manifested as epigastric discomfort, abdominal pain, nausea, vomiting, pale or flushed face, etc. (7) Mental seizures: mainly manifested as mental activity disorders, such as memory disorders, can be manifested as familiar with people or environments that have never seen before, this is called “déjà vu”, can also be very familiar with people or environments but do not know each other, this is called “strangeness This is called “unfamiliarity”; in case of cognitive disorder, it can be manifested as dream-like state, unreality and time distortion; in case of emotional disorder, it can be manifested as episodes of unpleasantness, fear, depression, low self-esteem, etc. It can also be manifested as sudden and rapid disappearance of unexplained anger. 5. Complex partial seizures: Mostly caused by lesions in a part of the brain, accompanied by impaired consciousness; after the seizure subsides, the patient cannot recall the situation during the seizure. If a simple partial seizure is accompanied by impaired consciousness, it is a complex partial seizure. Automatism is also a common form of complex partial seizure. In addition to hazy consciousness, the seizure often has one or more of the following manifestations: (1) Feeding automatism: The patient does not have anything in his mouth, but repeatedly does chewing or swallowing movements, as if he is eating, and feeding automatism is the most common form of automatism. (2) Imitation automatism: It is the imitation of various emotional states without any reason, such as fear-like, depression-like, panic-like, etc. (3) Postural automatism: It is the second most common form of automatism after eating automatism. It is characterized by various postures that are common in daily life, such as unbuttoning clothes, fumbling with clothes or bedding, touching a part of the body, raising the hand in the air, etc. (4) Walking automatism: It is characterized by purposeless actions, such as walking indoors and outdoors, riding a bicycle, taking a bus, or even driving a motor vehicle, but often violating traffic rules.