Previous studies have shown elevated titres of antinuclear antibodies (ANA) in 2.9-19% of patients with polymorphic light eruption (PLE). A diagnosis of lupus erythematosus (LE) was finally established in some of these ANA-positive patients.
Divisions of Special and Environmental Dermatology, Department of Dermatology, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, and Donauspital/SMZ-Ost, Vienna, Austria. stanislava.tzaneva@meduniwien.ac.at