The authors discuss the possible use of a scoring system when assessing the correct diagnosis of Lyme borreliosis (LB). Its criteria are based on analysis of anamnestic data, the clinical picture and monitoring of laboratory examinations of patients with regard to data in the literature (Burrascano 1995). The diagnosis of LB was assessed in this way in 1148 patients followed up in the welfare centre at the Infectious Diseases Clinic, Faculty Hospital Plzeň in 1996-1998. In the thus created system a score above 10 points confirmed LB, when the values were between 7 and 10 the disease was probable, when the score was below 7 it was unlikely. In patients with verified and notified LB with a typical clinical picture the score had the following values: early dermal stage - erythema migrans on average 13.9 points (not confirmed 10.2 points), acute neuroborreliosis 14.2 points (4.6), arthritis 13.9 points (4.7), cardiac 11.2 points (4.2). In notified cases there is a significantly higher score, significance p < 0.01.

        Key words: Lyme borreliosis - incidence - case-history - clinical diagnosis - serological diagnosis - scoring system - antibiotic treatment.