A 17 year old sexually active female presents with a five-da…

A 17 year old sexually active female presents with a five-day history of fever, chills and a persistent left ankle pain and swelling.  On physical examination, maculopapular and pustular skin lesions are noted on the trunk and extremities. She denies any symptoms of genitourinary tract infections.  Her symptoms are likely the result of which of the following diseases?