PLE-4671

A previously healthy girl presents with a 1-week history of cough, runny nose, fever, sore throat, and red eyes. She went to her pediatrician 2 days ago and was prescribed Augmentin (amoxicillin and clavulanate) for presumed pharyngitis. Yesterday, Ana developed a red rash which started on her face and has spread to her trunk. Her mother insists that the rash is from her new medication. What is the most likely diagnosis?