Clinical picture of late-onset systemic lupus erythematosus in a group of Polish patients.

ABSTRACT

INTRODUCTION: The prevalence of late-onset systemic lupus erythematosus (SLE) diagnosed in patients over the age of 50 years is estimated at 10% to 20%. SLE in elderly patients has specific features with misleading signs and symptoms, but its clinical course seems milder compared with that in younger patients. OBJECTIVES: The aim of the study was to assess clinical manifestations of late-onset SLE in a group of patients treated in Poland. PATIENTS AND METHODS: From a group of 230 consecutive patients with SLE, individuals with late-onset disease were selected. We retrospectively analyzed the incidence of clinical features of SLE, concomitant diseases, and treatment. The incidence of clinical features in late-onset patients was compared with that in a group of 108 patients with early-onset SLE. RESULTS: Late-onset SLE was confirmed in 20 patients (8.7%) including 16 women (80%) and 4 men (20%). A delay in diagnosis was 31.7 months (0-144). The most common SLE features were arthritis (50%), rash (40%), nephropathy (40%), photosensitivity (30%), mouth ulcerations (30%), interstitial lung disease (30%), fever (25%), leukopenia (65%), and thrombocytopenia (35%). Kidney involvement was present in all men and in 25% of women. Thrombotic complications were noted in 38.8% of the patients. Concomitant diseases were common in our study group. CONCLUSIONS: The clinical picture of late-onset SLE differs from that of early-onset SLE. Arthritis, leukopenia, and thrombotic complications are frequent, while skin manifestations, photosensitivity, nephropathy, vasculitis, and central nervous system involvement are less common in late-onset SLE. The diagnosis of late-onset SLE is often delayed, and treatment is determined by the presence of concomitant diseases.