We aimed at analysis of the clinical pattern and the course of lympho-nodular toxoplasmosis taking into account the intensity and duration of the illness. Ninety seven patients (69 adults and 28 children) with lympho-nodular toxoplasmosis were examined. Toxoplasmosis was diagnosed by indirect immunofluorescence; the titres of antibodies of IgG and IgM classes were also estimated. Depending on the duration of the illness three periods: early, regression of symptoms and protraction of symptoms were defined; depending on the intensity of signs and symptoms of toxoplasmosis three courses of the disease: acute, subacute and chronic were defined. The analysis showed that clinical picture of lympho-nodular toxoplasmosis was characterized by swelling of various peripheral lymph nodes as well as by general clinical symptoms (88.7% of cases) the intensity and duration of which, to a large extent, determined course of the illness. No correlation between clinical course and duration (early and regression period) of lympho-nodular toxoplasmosis and titres IFA-IgG (before therapy) was found. Pathomorphology of lymph nodes in patients with toxoplasmic lymphadenopathy is a valuable complementary examination which renders it possible to determine the period of the disease.