Subacute cutaneous lupus erythematosus: two cases of delayed diagnosis.

Two cases of subacute cutaneous lupus erythematosus are described. Features which delayed diagnosis are discussed. The potential clinical and histopathological overlap between this condition and erythema multiforme is emphasized, drawing attention to the histological features which allow distinction. The possibility that some cases of Rowell's syndrome may be manifestations of subacute lupus erythematosus is discussed.