Nonconvulsive status epilepticus (NCSE) is defined by cognitive or behavioural changes for at least 30 minutes supplemented with evidence of seizures on electroencephalogram (EEG). NCSE constitutes 25% of all cases of status epilepticus (SE) and the highest incidence is seen among children below one year of age. The condition frequently occurs in patients with neurological injuries, specific epilepsy syndromes, learning disabilities and in the course of convulsive SE. Aggressive treatment is recommended for complex partial NCSE and in comatose patients and cautious treatment is recommended in absence and simple partial NCSE.