The clinical manifestations of seizures are complex and varied due to the different starting sites and modes of delivery of abnormal discharges. Generalized tonic-clonic seizures: characterized by sudden loss of consciousness and generalized tonicity and convulsions, the typical seizure process can be divided into tonic phase, clonic phase and late seizure phase. The duration of a seizure is usually less than 5 minutes, often accompanied by tongue bite, urinary incontinence, etc., and can easily cause injuries such as asphyxia. Tonic-clonic seizures can be seen in any type of epilepsy and epilepsy syndrome. Disorientation seizures: Typical disorientation manifests itself as a sudden onset, with aborted movements, staring, screaming, and may be accompanied by blinking, but is largely unaccompanied or accompanied by mild motor symptoms and ends abruptly. It usually lasts 5-20 seconds, but rarely lasts more than 1 minute. It is mainly seen in children with epilepsy with loss of consciousness. Tonic seizures: They are characterized by strong and sustained contractions of the whole body or bilateral muscles, with muscle rigidity that fixes the limbs and trunk in a certain tense position, such as axial dorsiflexion or forward flexion of the trunk. They often last from a few seconds to tens of seconds, but usually do not exceed one minute. Tonic seizures are most often seen in patients with diffuse organic brain damage and are generally a sign of severe disease, mainly in children, such as Lennox-Gastaut syndrome. Myoclonic seizures: These are sudden, rapid, short muscle contractions that appear to resemble electric shock-like shaking of the torso or limbs, sometimes several times in a row, mostly after awakening. It can be a generalized movement or a localized movement. Myoclonus is clinically common, but not all myoclonus is a seizure. There are both physiological and pathological myoclonus. Myoclonus with a combination of multiple spikes and slow waves on the EEG is a seizure, but sometimes the spikes and slow waves on the EEG may not be recorded. Myoclonic seizures are seen both in some patients with idiopathic epilepsy with a good prognosis (e.g., benign myoclonic epilepsy in infants, juvenile myoclonic epilepsy) and in some epilepsy syndromes with a poor prognosis and diffuse brain damage (e.g., early myoclonic encephalopathy, severe myoclonic epilepsy in infants, Lennox-Gastaut syndrome). Spasticity: refers to infantile spasms that manifest as sudden, brief tonic flexion or extension contractions of the trunk muscles and bilateral limbs, mostly in the form of seizure nodding and occasionally seizure backwardness. The entire course of the muscle contraction is about 1 to 3 seconds, often in clusters. It is commonly seen in West syndrome, and other infantile syndromes are sometimes seen. Atonic seizures: are caused by a sudden loss of muscle tone in part or all of the body bilaterally, resulting in the inability to maintain the original posture, sudden collapse, falling limbs, etc. Seizures are relatively short, lasting from a few seconds to more than 10 seconds. Atonic seizures mostly alternate with tonic seizures and atypical aphasic seizures in epilepsy with diffuse brain damage, such as Lennox-Gastaut syndrome, Doose syndrome (myoclonic-standing inability epilepsy), and early stage of subacute sclerosing holoprosencephalitis. However, there are certain patients who have only atonic seizures, the etiology of which is unknown. Simple partial seizures: the seizures are conscious and last from a few seconds to more than 20 seconds and rarely exceed 1 minute. Depending on the origin of the discharge and the site of involvement, simple partial seizures can manifest as motor, sensory, autonomic and psychogenic, the latter two rarely occur alone and often develop into complex partial seizures. Complex partial seizures: The seizures are accompanied by varying degrees of impaired consciousness. It is manifested as sudden movement stop, straightening of the eyes, no screaming, no falling, and no change in facial color. Some patients may have automaticity, some involuntary and unconscious movements, such as lip licking, lip smacking, chewing, swallowing, groping, face wiping, hand clapping, walking aimlessly, talking to oneself, etc., which cannot be recalled after the seizure. Most of them originate in the medial temporal lobe or limbic system, but they can also originate in the frontal lobe. Secondary generalized seizures: Simple or complex partial seizures can be secondary to generalized seizures, most commonly secondary to generalized tonic clonic seizures. Partial seizures secondary to generalized seizures still belong to the category of partial seizures, which are obviously different from generalized seizures in terms of etiology, treatment and prognosis, so the differentiation of the two is particularly important in clinical practice. The above introduction is now very clear about the symptoms of epilepsy, epilepsy is now a problem that many people will encounter, once encountered this disease, so that people’s normal life can not be normal, it is very distressing, this article introduces the symptoms of epilepsy, epilepsy diagnosis and pathogenesis, interested partners hurry to see it.