In the Department of Developmental Neurology, K. Marcinkowski University of Medical Sciences in Poznań 120 video-EEG were performed in 1997-1998. Video-EEG monitoring was executed by means of computer electroencephalograph "Ceegraph" (Biologic--USA). A group of 20 patients between the age of 20 months up to 19 years, whose video-EEG was analysed, was hospitalised because of diagnostic doubtful seizures. Stimultaneous EEG and clinical events recordings were evaluated with the use of videotape at all children. In the investigated group, 13 patients with epileptic seizures (5 with nonepileptic seizures, 1 patient with choreatic movements and 1 with nocturnal myoclonus) were recorded. There were 3 children classified with generalised absence seizures, 3 with partial seizures and 1 patient with myoclonic seizure among the children with epilepsy. Moreover, there were several different cases diagnosed: 3 patients presented Lennox-Gastaut syndrome, 1 was classified with West's syndrome, 1 patient was characterised by Alpers syndrome and 1 with tuberous sclerosis. Psychogenic pseudoepileptic seizures were classified in 5 patients, in 3 of them both epileptic and nonepileptic events occurred. Utility of video-EEG monitoring allows to differentiate and classify seizures and epileptic syndromes in childhood, especially absence seizures and psychogenic pseudoepileptic seizures. Its use makes the introduction of appropriate treatment possible.