- Viral: Most common type of pharyngitis; Influenza, adenovirus, rhino; EBV (mono); CMV
- Bacteria: group A beta hemolytic, Group B or C strep species, gonorrhea (GC), diphtheria
- EBV: kissing, sharing toothbrushes
- Nasal congestion
- Prolonged fatigue (months) sometimes with CMV, EBV
- Group A Strep: f, acute pain, absence of cough
- Red posterior pharynx
- Exudate on posterior pharynx, tonsils
- Hepatomegaly, splenomegaly w/CMV, EBV
- Maculopapular rash w/EBV after amoxicillin or other antibiotics
- Head and neck adenopathy with EBV and strep in particular
- Group A Strep: pharyngeal redness, exudate, adenopathy, sometimes scarletina-form rash; sometimes palatal petechiae
- Diphtheria: pseudomembranes w/airway obstruction (very unusual infection in era of vaccinations
- Group A Strep: + rapid strep test; + culture
- EBV: CBC w/atypical lymphocytes, + mono-spot