Lemierre's Syndrome: A Case Report.

A 21-year-old woman presented with a sore throat and systemic symptoms, including fever, diarrhea, and chest pain, progressing to sepsis. Imaging revealed a pharyngeal abscess, thrombophlebitis of the left internal jugular vein, and septic emboli. Blood cultures confirmed Fusobacterium necrophorum, and the patient was diagnosed with Lemierre's syndrome. Empirical antibiotics were adjusted to ampicillin-sulbactam based on culture results, leading to a full recovery after a month-long treatment course. This case highlights the diagnostic challenges of Lemierre's syndrome, its severe complications, and the importance of early recognition and targeted antibiotic therapy. Prompt diagnosis and treatment of Lemierre's syndrome are essential to prevent life-threatening complications, underscoring the importance of maintaining a high index of suspicion in patients presenting with systemic symptoms following pharyngitis.