LAUSR

REPORT OF A CASE A 22-year-old man with history of acne was referred to our dermatology department for possible patch testing and evaluation of his widespread rash. Three months before referral, the patient had an eruption of well-demarcated plaques on his scalp, face, neck, and extremities, associated with pruritus. The patient’s eruption was refractory to topical corticosteroids (desoximetasone, clobetasol, and triamcinolone). The patient denied similar eruption in family members or close contacts. Additional medical history, including newmedications, changes in personal products, and new sexual contacts, was noncontributory, and detailed review of systems was found to be negative. Physical examination found annular erythematous plaques with central clearing on the trunk and extremities, including the palms of both hands (Fig 1). The face, scalp, and inguinal area were spared. Results of laboratory tests, which included