 GAS Strep. pyogenes. Virus: Rhino, Adeno, EBV etc.  Fever*, Anterior lymphadenopathy*, Tonsillar exudate*, no cough* Centor criteria – 0 unlikely to 4 likely.

Location

Inflammation of mucous membranes of oropharynx

Aetiology

• Infectious: Viral infection (rhinovius, influenza, adenovirus etc), Bacterial (GAS beta haemolyitc, other Streps, Neisseria, Mycoplasma, coryne, the usual)
• Non infectious: allergy, trauma, cancer, reflux, toxins

Demographics

Kids <5yo most common. Increased in countries where antibiotics are over prescribed

Risk Factors: Sick contacts, overcrowding, the usual “susceptible to infection” risks

Clinical Features

• self-limited to 5 to 7 days, is not progressive, is bilateral, does not have trismus, and does not have evidence of airway obstruction (stridor).
• fever, tonsillar exudates, painful cervical adenopathy, pharyngeal erythema, and ear pain.
• Viral associated symptoms: coughing, rhinorrhea, conjunctivitis, headache, rash.
• GAS: acute onset, lacks signs of viral URTI (cough or rhinorrhea), associated with fever, tonsillar exudates, and cervical adenopathy.