Cigarette smoking and response to antimalarials in cutaneous lupus erythematosus patients: evolution of a dogma.

Antimalarial agents ameliorate disease in more than half of patients with cutaneous lupus erythematosus (CLE), regardless of smoking status. The major determinant of responsiveness appears to be severity: more extensive CLE and CLE in the setting of systemic lupus erythematosus (SLE) respond less well to antimalarial therapy. Prospective studies are needed to determine whether antimalarials are more likely to benefit patients--smokers and nonsmokers--who have milder cutaneous lupus. Agreement on a single, validated disease severity measure for CLE would permit comparisons among studies and thereby foster progress in the field.