Aim. Construction of a questionnaire describing personality traits connected to the Occurrence and persistence of neurotic disorders. Method. Responses of 794 patients (before treatment) and 520 persons from the control group on items of the constructed personality questionnaire and the symptom checklist 0. Analyses of subscales reliability, and item-scale correlations, test-retest and split-half reliability. Factor analyses estimating internal reliability of the questionnaire. Cross-validation with the symptom checklist KO0. Results. psychometric properties of KON-2006 questionnaire indicate that it is consistent and reliable enough. Validity analyses indicate a large probability that the X-KON coefficient informs on personality dysfunctions related to neurotic disorders. Conclusions. The Neurotic Personality Questionnaire KON-2006 may serve to estimate personality traits connected to the occurrence and persistence of neurotic disorders as well as changes resulting from psychotherapy.