A 10-month-old boy was in the hospital being treated for salmonella osteomyelitis of the scapula when near the end of his course of therapy, a rash developed. He had an excellent response to the ceftriaxone that was being used for intravenous antimicrobial therapy for his osteomyelitis, and was clinically well when the rash began. He remained well with no fever or any new complaints except mild itching, which did not interfere with his play or other activities.Mas...