This case involves a 20-year-old female college student presenting with a 3-day sore throat. Her symptoms include decreased appetite, headaches, pain with swallowing, runny nose, and slight hoarseness. On examination, she has no swollen lymph nodes or tonsils, but her throat is erythematous. Differential diagnoses could include strep throat, viral pharyngitis, or mononucleosis. Further history and physical exam are needed to guide diagnostic testing and diagnosis.