Acute Tonsillitis Management

Diagnosis

Bacterial tonsillitis is characterized by sudden onset of sore throat, fever, tonsillar exudates, tender anterior cervical lymphadenopathy, and absence of cough 1, 2
Viral tonsillitis typically presents without high fever, tonsillar exudate, and cervical lymphadenopathy 1
Rapid antigen detection testing and/or throat culture for Group A Streptococcus should be performed to confirm bacterial infection before initiating antibiotics 2, 3

The American Academy of Pediatrics recommends penicillin V for 10 days as first-line antibiotic therapy for confirmed bacterial tonsillitis 1, 3
For penicillin-allergic patients, non-anaphylactic allergy can be treated with first-generation cephalosporins, while anaphylactic allergy can be treated with clindamycin, azithromycin, or clarithromycin 1
The Infectious Diseases Society of America recommends amoxicillin-clavulanate, clindamycin, or second or third-generation cephalosporins for treatment failures 1, 4

Severe cases with difficulty swallowing, drooling, neck tenderness, or swelling should be evaluated for rare throat infections like peritonsillar abscess, parapharyngeal abscess, epiglottitis, or Lemierre syndrome 6
Short courses of antibiotics are less effective for GAS eradication and should be avoided 1, 3
Follow-up throat cultures are not recommended for asymptomatic patients who have completed appropriate antibiotic therapy 2, 3

Tonsillectomy can be considered for recurrent, documented episodes of bacterial tonsillitis that meet Paradise criteria 2
Alternative regimens such as clindamycin, amoxicillin-clavulanate, or penicillin with rifampin can be considered for documented recurrent GAS tonsillitis within 2 weeks of completing standard therapy 1

Initiating antibiotic therapy without confirming GAS infection through testing can lead to unnecessary antibiotic use 6, 3
Using broad-spectrum antibiotics when narrow-spectrum penicillins are effective for confirmed GAS can contribute to antibiotic resistance 3
Inadequate duration of antibiotic therapy increases the risk of treatment failure 1, 3