Subacute cutaneous lupus erythematosus in a patient with rheumatoid arthritis.

A 51-year woman with a seropositive rheumatoid arthritis (RA) developed antiLa/SSB antibodies and erythematosquamous lesions on her upper back. The histological diagnosis was subacute cutaneous lupus erythematosus (SCLE) (papulosquamous form). There was no indication or a drug-induced SCLE. The concurrence of RA and SCLE seems to be rare. We review the clinical, serologic and immunogenetic features in these patients with coexistent RA and SCLE.