Treatment of Acute Pharyngitis

Diagnostic Approach

• The American Academy of Pediatrics and the Infectious Diseases Society of America recommend that Group A Streptococcus (GAS) is the most common bacterial cause of pharyngitis and the primary bacterial pathogen requiring specific treatment 1
• Clinical features alone cannot reliably distinguish between viral and bacterial causes, necessitating laboratory confirmation, as stated by the Infectious Diseases Society of America 1
• Diagnosis should be confirmed using either Rapid Antigen Detection Test (RADT) or throat culture, with RADT being a positive result that is diagnostic and does not require backup culture, according to the Infectious Diseases Society of America 1, 3

Treatment Recommendations for GAS Pharyngitis

• The Infectious Diseases Society of America recommends penicillin V (oral) for 10 days as the treatment of choice for GAS pharyngitis due to its proven efficacy, safety, narrow spectrum, and low cost 1, 4
• For patients unlikely to complete a full 10-day course of oral therapy, the Infectious Diseases Society of America recommends intramuscular benzathine penicillin G as a single dose 2, 4
• For non-anaphylactic penicillin allergy, the Infectious Diseases Society of America suggests first-generation cephalosporins, such as cephalexin, as an alternative treatment option 1, 3
• For anaphylactic penicillin allergy, the Infectious Diseases Society of America recommends clindamycin or macrolides, such as azithromycin or clarithromycin, as alternative treatment options 1, 3

Treatment Goals

• The American Heart Association and the Infectious Diseases Society of America recommend that the primary goal of treatment is to prevent acute rheumatic fever and suppurative complications, such as peritonsillar abscess 4, 5
• The Infectious Diseases Society of America also recommends reducing clinical symptoms and duration of illness, decreasing contagiousness, and preventing transmission to close contacts 1, 4

Non-GAS Pharyngitis

• The Infectious Diseases Society of America states that viral pharyngitis is self-limiting and requires only symptomatic treatment 1
• The American Heart Association notes that Group C and G streptococci can cause pharyngitis with similar clinical features to GAS, but are not associated with acute rheumatic fever 5

Symptomatic Treatment

• The American Academy of Pediatrics recommends acetaminophen or NSAIDs for pain relief and fever reduction, and advises against the use of aspirin in children due to the risk of Reye syndrome 3
• The Infectious Diseases Society of America recommends against the routine use of corticosteroids in pharyngitis 1, 3

Management of Recurrent Episodes

• The Infectious Diseases Society of America suggests considering whether the patient has true recurrent infections or is a chronic carrier experiencing viral infections, and recommends against antibiotic treatment for chronic carriers 1, 3, 5
• For true recurrent GAS pharyngitis, the American Heart Association and the Infectious Diseases Society of America recommend options such as clindamycin, penicillin plus rifampin, or amoxicillin-clavulanate 1, 5