Acute Pharyngitis: Differential Diagnosis Infectious: • Respiratory viruses (25-45%) • Group A Strep (5-15%) • Other bacteria: Group C and G strep, Mycoplasma and Chlamydia species, Corynebacterium, Pharyngeal tularemia • STDs: Acute Retroviral Syndrome, Neisseria gonorrhoeae, Treponema pallidum • Diffuse viral syndromes: EBV, CMV Noninfectious: • Allergic rhinitis or sinusitis • GERD • Smoking or exposure to second-hand smoke • Exposure to dry air • Vocal strain • Trauma (intubation) • Malignancy: Lymphoma, SCC • Autoimmune disorders: Kawasaki disease, PFAPA, Behcet syndrome #Acute #Pharyngitis #Differential #Diagnosis #causes
