Lauren is a 10-year-old girl who presents to the clinic wher…

Lauren is a 10-year-old girl who presents to the clinic where you are working with a complaint of pain and itching in her left ear.  You notice Lauren winces when you palpate her external ear during the physical exam. Upon examination, you note the external auditory canal is tender, erythematous, and narrowed. The most likely diagnosis for Lauren is: