Normally, electroconvulsive shock is not associated with recurrence of the disease and complications for about a year, but it depends on the individual case. If the damage to the brain from electroconvulsive shock is not severe, there will be no problem of late recurrence. However, if the patient’s cranial brain becomes edematous during electroconvulsive shock, or even if the brain is deprived of oxygen for more than 4 minutes, recurrent symptoms such as more severe grand mal seizures may occur at a later stage. At this time, active nerve nutrition, reduction of intracranial pressure, and antiepileptic prophylaxis are needed. Therefore, patients with electroconvulsive shock must be treated with active prophylaxis according to the degree of cranial injury at that time, so that the recurrence after electroconvulsive shock can be controlled as much as possible.