Seizures cause abnormal firing of neurons in the brain. With initial symptoms and EEG changes, we can divide seizures into two types: focal seizures and generalized seizures. 
Focal seizures
A focal seizure is a seizure in which neurons in part of the cerebral hemisphere are affected, starting in one side of the brain and extending to both sides. The clinical manifestations of these episodes are varied, including the following:Simple partial seizures:The patient is conscious during the attack, and symptoms are confined to a part of the body, such as twitching of the corners of the mouth or twitching of the fingers or toes. Complex partial seizures:Patients will have impaired consciousness during the attack, which is manifested by confusion, confusion, etc. Complex partial seizures may progress to secondary generalized tonic-clonus. 
Generalized seizures
Generalized seizures are seizures in which both cerebral hemispheres are affected at the same time. The clinical manifestations of such episodes are as follows:
1. Generalized tonic-clonus:Patients experience symptoms such as loss of consciousness, generalized muscle rigidity, and apnea during the attack. 2. Absence seizures:Patients experience a brief loss of consciousness during the attack, but daily life is not affected. 3. Clonic seizures:Patients experience limb clonic jerks during the attack, which in severe cases may lead to falls. 4. Myoclonus:Patients experience rapid muscle contractions during the attack, which manifests as sudden limb twitching. 5. Atonic seizures:Patients experience muscle relaxation during an attack, resulting in abnormal body posture. 
There are many types of seizures, and understanding the characteristics and types of seizures can help patients and their families identify and seek professional treatment in a timely manner. In the case of epilepsy, it is necessary to develop a targeted plan according to the type of seizures and the condition of the patient.