Aim: Analysis of timing of neurotic disorders' symptoms improvement during intensive psychotherapy in a day hospital at the Wojewodzki IDrodek Leczenia Nerwic according to an integrative theoretical approach and relation of the phenomena observed to therapy outcome. Material: 3509 symptom checklists 0, filled in by 319 patients treated in day hospital in 1990-1998. The group consisted of 235 females and 84 males, mostly with diagnoses of somatization disorder, generalised anxiety disorder, dissociative motor and sensoric disorders as well as with a diagnosis combining elements of listed above. Method: Symptom checklists 0, filled weekly by patients were examined. For 10 selected neurotic symptoms, differential treatment-induced improvement rates were looked for. Results: Particular neurotic symptoms disappeared with different velocity during intensive psychotherapy. In subgroups of patients with different psychotherapy outcomes, during subsequent 9 weeks of treatment, different rates of selected 10 neurotic disorders' symptoms improvement were found. Conclusion: During psychotherapy processes with beneficial final results, higher improvement speed for selected neurotic symptoms was observed. However, significant differences in particular symptom improvement rates make treatment monitoring more complicated.