Treatment for Streptococcal Pharyngitis

First-Line Treatment for GAS Pharyngitis

The American Academy of Pediatrics recommends oral penicillin V for 10 days as the treatment of choice for patients with confirmed GAS pharyngitis, with dosages of 250 mg twice or three times daily for 10 days in children, and 250 mg three or four times daily, or 500 mg twice daily for 10 days in adolescents and adults 2, 3, 4
Amoxicillin is often used in place of penicillin V, particularly for young children, due to better taste acceptance and once-daily dosing option, with a recommended dosage of 50 mg/kg once daily (maximum 1000 mg) for 10 days 1
Intramuscular benzathine penicillin G (1.2 million units as a single dose) is preferred for patients unlikely to complete the full 10-day oral regimen 5, 4

For patients with non-anaphylactic penicillin allergy, first-generation cephalosporins are recommended for 10 days 2, 3, 6
For patients with anaphylactic penicillin allergy, options include clindamycin, clarithromycin, and azithromycin, with specific dosages and durations 2, 3, 6

For patients with multiple recurrences, consider whether they are experiencing true recurrent infections or are chronic carriers with viral infections 7, 6
Treatment options for documented recurrent GAS pharyngitis include clindamycin, amoxicillin-clavulanic acid, and benzathine penicillin G with rifampin 7, 3, 6

Acetaminophen or NSAIDs are recommended for moderate to severe symptoms or fever control 2, 3, 6
Aspirin should be avoided in children due to risk of Reye syndrome 2, 3, 6
Corticosteroids are not recommended for routine use 2, 3

Viral pharyngitis is the most common cause of pharyngitis (70-85% of cases), with clinical features suggesting viral etiology including rhinorrhea, hoarseness, oral ulcers, conjunctivitis, and diarrhea 8, 2, 3, 6
Group A Streptococcus (S. pyogenes) is the most common bacterial cause, with features suggesting GAS including sudden onset of sore throat, fever, tonsillar exudate, tender anterior cervical lymphadenopathy, and absence of cough 5, 2, 6

Overdiagnosis and overtreatment of viral pharyngitis as bacterial infection 6, 8
Failure to complete the full 10-day course of penicillin or amoxicillin, which can lead to treatment failure and increased risk of rheumatic fever 5
Using macrolides (azithromycin, clarithromycin) in areas with high resistance rates 6
Failing to distinguish between true recurrent infections and chronic carriage with viral infections 7, 6

Diagnosis should be confirmed by rapid antigen detection test (RADT) or throat culture before prescribing antibiotics 2, 3
In children and adolescents, negative RADT tests should be backed up by a throat culture 2, 3
Testing is not recommended for patients with clinical features strongly suggesting viral etiology 2, 3