EN
In this article the social interactionist theory was adopted as the methodological basis of diagnosis and therapy in order to demonstrate the multitude of factors which may have an influence on the linguistic activity of an individual. A method used in research was the individual case study of a man with the general pathology of central nervous system caused by biological factors (complications of the neuro-oncological treatment) and social ones (limited process of socialization). The results of neuropsychological and projective tests, questionnaires as well as experimental clinical trials have shown deficits in all areas of man’s functioning (speech, communication, cognition, social and emotional area) and have set the direction of a therapeutic approach.