Epilepsy is the common name for epilepsy, a chronic brain disease that manifests as recurrent seizures, with specific manifestations including early symptoms and seizure phase symptoms. I. Early symptoms: Before a seizure, some patients can anticipate their imminent onset hours or even days before, which may include abnormal sensation of the limbs, occurrence of taste, smell and changes in hearing, and some patients may show blurred vision. Patients can take medication in advance to prevent attacks. Second, the symptoms of the seizure phase: because of the risk of respiratory depression, it is the most severe state of seizure, with loss of consciousness and generalized convulsions as clinical features, and the seizure is divided into three phases. 1, tonic phase: the tonic phase can last 10-20s, and the patient shows tonic continuous contraction of skeletal muscles throughout the body during seizure. The contraction of eye muscles will cause the eyeballs to move up; the contraction of respiratory muscles and laryngeal muscles will cause laryngeal spasm, breath holding, and the larynx can make a screaming sound; the contraction of masticatory muscles will cause strong opening and closing of the mouth, which may bite the tongue, and some of them will not cause the teeth to close; the tonic contraction of neck and trunk muscles will cause the neck and trunk to flex first, and then show a posterior recoil-like action, and the upper limbs will be raised and internally rotated first, and then become inward and forward rotated. Both lower limbs are flexed and become mainly tonic extension; 2. Clonic phase: The clonic phase lasts 30-60s, or longer, and is characterized by rhythmic contraction and diastole of muscles throughout the body, with clonic frequency gradually slowing down, intervals lengthening, and finally stopping. After the relaxation of all muscles, it enters the late phase of seizure. The tonic and clonic phases are also accompanied by dilated pupils, rapid heartbeat, increased blood pressure, and increased bronchial secretions; the patient’s skin may change from pale to dry due to breath-holding and apnea, and the pupils may become dilated and the reflex to light disappears. In addition, the deep and superficial reflexes of the limbs disappear, and Babinski’s sign can appear positive; 3. Late seizure: the whole process lasts about 5-15min. Urinary incontinence, which is the phenomenon of urine loss, can occur due to the relaxation of the whole body muscles and the sphincter muscles. There can also be a brief tonic spasm, facial manifestations as the teeth are closed, dental muscle spasm can bite the tongue. Generally, breathing is restored first, followed by gradual normalization of heart rate, blood pressure, pupils, etc., relaxation of muscle tone, and then gradual awakening of consciousness. Most patients appear to be drowsy in the late stage of the attack. Before drowsiness and not fully awake, some patients will have emotional reactions such as automatism, rage and panic.