The aim of the study is the estimation of the level of development of speech and estimation teh importance of risk factors which can disturb development first stages of human development. 40 patients aged 1- 8 yrs of age participated in the study. They underwent psychological, neurological and phycsiotherapeutical evalutaion. The inclusion criteria included the prevalence some perinatal disturbances as risk factor of developmental delay and pervalence the epilepsy treated with conventional or novel antiepileptic drugs (AEDs). The data from Apgar Scale used as well. Parents confirm the agreement for the examinations as well. The Developmental Scale Denver and Brunet- Lezine, AFA Scale for Children and Neuropsychological Tasks Set used in the study.

The analysis of variance with SPSS support used for revision of hypothesis. The mean of IQ was 65 in examined group. The speech disturbances in understanding corelated to intellectual delay as well. 20 children have problems with walking and revealed the objectives of intellectual impairment additionally. 17 children had problems with social contacts and verbal expression of needs.

The results show there was strict connection between the time of occurence of epilepsy and the speech disturbances, data important on p.0.01. There was no significant impact of epilepsy treatment on cognitive funtions, especially speech, but the efficacy of treatment correlated with IQ parameters.

In conclusion – early onset of epilepsy and non –efficient control of seizureas are the main factor which disturb normal development of speech on level of expression and impression.