An 18-year-old woman with no significant medical history and no history of sexual intercourse presented for evaluation of pharyngitis and tonsillar exudates of 1 week duration. She reported neck swelling and an occasional dry cough but no fevers, chills, trismus, headache, dyspnea, chest pain, abdominal pain, fatigue, or rash. One week prior to presentation, she visited an urgent care clinic for evaluation of pharyngitis and white exudates on her tonsils. Results of a rapid strep test and heterophile antibody test (monospot) were negative. A throat culture was obtained and she was prescribed amoxicillin (500 mg twice daily for 10 days) for possible group A streptococcal infection. Despite taking antibiotics for 7 days, she had no improvement in her symptoms. One day prior to presentation, the urgent care clinic notified the patient that her throat culture results were negative.