Explore a comprehensive ENT medicine lecture on acute sinusitis, covering both bacterial and viral types. Learn about the causes, symptoms, diagnosis, and treatment options for this common condition. Understand the differences between viral and bacterial sinusitis, and discover effective management strategies including supportive care and nasal saline irrigation. Gain insights into rhinitis medicamentosa and the appropriate use of antibiotics in acute bacterial sinusitis. Enhance your knowledge of ENT medicine and prepare for USMLE exams with this informative 18-minute video lecture.