Why use it

Most pharyngitis is viral and self-limiting; however, GAS pharyngitis benefits from antibiotic treatment to prevent rheumatic fever, peritonsillar abscess, reduce symptom duration, and limit transmission. Empirical antibiotic prescribing for all sore throats leads to antimicrobial resistance and adverse drug effects. The FeverPAIN score provides an evidence-based clinical framework for stratified antibiotic prescribing — reducing unnecessary prescriptions while ensuring treatment for patients with high GAS probability. FeverPAIN has similar discrimination to Centor but was derived specifically to avoid over-prescribing.

About

The FeverPAIN score is a validated clinical decision rule developed by Little and colleagues from the PRISM study (Primary Care Streptococcal Management) to predict the probability of Group A Streptococcal (GAS) pharyngitis in primary care and guide antibiotic prescribing decisions. The score assigns points for five features, each worth 1 point: Fever in the past 24 hours, Purulent exudate on tonsils, Attendance rapidly within 3 days of symptom onset, severely Inflamed tonsils, and No cough or coryza. Total score ranges 0–5. Low scores (0–1) are associated with 13–18% streptococcal culture positivity (no antibiotics recommended); scores of 2–3 with 34–40% (delayed antibiotic strategy recommended); and scores 4–5 with 62–65% (immediate antibiotic recommended). The FeverPAIN score was developed specifically for UK primary care settings but has been validated in multiple healthcare systems.

When to use

Any adult or child (≥3 years) presenting to primary care or emergency department with acute sore throat
Deciding whether to prescribe antibiotics or use a delayed prescription strategy for pharyngitis
Identifying patients who are unlikely to benefit from antibiotics (score 0–1)
Guiding throat culture or rapid antigen detection test (RADT) threshold decisions
Reducing inappropriate antibiotic prescribing while maintaining appropriate treatment of GAS

Formula

FeverPAIN Score (0–5 points): Fever in past 24 hours (temperature ≥38°C): +1 point Purulent exudate on tonsils: +1 point Attend rapidly (within 3 days of symptom onset): +1 point Severely inflamed tonsils (bilateral, ≥3+ erythema or swelling): +1 point No cough or coryza (absence of cold symptoms): +1 point Risk of GAS pharyngitis: 0–1: 13–18% → No antibiotics 2–3: 34–40% → Delayed prescription or RADT 4–5: 62–65% → Immediate antibiotics

Pearls & pitfalls

FeverPAIN was specifically designed to REDUCE antibiotic prescribing — a score of 0–1 confers only 13–18% GAS probability (lower than the threshold to benefit from antibiotics).
Each of the 5 FeverPAIN criteria is worth 1 point (maximum total 5). FeverPAIN differs from Centor/McIsaac by including purulence and rapid attendance and was derived specifically to reduce over-prescribing.
"Rapidly" in criterion 3 means attending within 3 days of symptom onset (indicating acute, severe illness more likely to be bacterial).
"Severely inflamed" tonsils (criterion 4) means bilateral tonsillar erythema ≥3+ or bilateral significant tonsillar swelling, not just mild redness.
The FeverPAIN score does NOT replace clinical judgment: peritonsillar abscess, epiglottitis, and Ludwig angina must be excluded clinically before applying the score.
RADT (rapid antigen detection test) specificity is high (95–99%) but sensitivity is only 70–90% — a negative RADT does not exclude GAS in high-scoring patients.
The Centor score (4 criteria: fever, tonsillar exudate, anterior cervical lymphadenopathy, absence of cough) is an alternative validated tool but may lead to more antibiotic prescribing.
Complications of GAS pharyngitis to watch for regardless of score: peritonsillar abscess (unilateral uvular deviation), retropharyngeal abscess, rheumatic fever, post-streptococcal glomerulonephritis.
Do NOT apply to patients with severe systemic illness, immunocompromise, suspected abscess, or recent antibiotic use — clinical assessment takes precedence.

Next steps

Score 0–1 (13–18% GAS Probability): No antibiotics recommended. Symptomatic management only (paracetamol, NSAIDs, lozenges). Advise patient to return if not improving after 7 days. Score 2–3 (34–40% GAS Probability): Delayed antibiotic prescription strategy — provide prescription to fill if not improving after 3–5 days, or use RADT to guide decision. Score 4–5 (62–65% GAS Probability): Immediate antibiotic therapy is appropriate. First-line: phenoxymethylpenicillin (penicillin V) 500 mg BD for 5–10 days (or amoxicillin 500 mg BD for 5 days). Penicillin allergy: clarithromycin or erythromycin. Always reassess if symptoms worsen or peritonsillar abscess is suspected.

Evidence

Little P et al. Validating the FeverPAIN score for streptococcal pharyngitis in primary care. Ann Fam Med. 2013;11(5):447-454. PMID:24019276. Derivation cohort: 1760 patients across 68 UK practices. AUC 0.73 for GAS culture positivity. Validated in: van Vugt SF et al. Use of serum C reactive protein and procalcitonin concentrations in addition to symptoms and signs to predict pneumonia in patients presenting to primary care with acute cough. Thorax. 2012. NICE sore throat guidelines (NG84, 2018) incorporate FeverPAIN as a recommended clinical decision support tool.

References

Little P et al. Validating the FeverPAIN score for streptococcal pharyngitis in primary care. Ann Fam Med. 2013;11(5):447-454. — link
Little P et al. Antibiotic prescription strategies for acute sore throat: a prospective observational cohort study. Lancet Infect Dis. 2014;14(3):213-219. — link
NICE guideline NG84. Sore throat (acute): antimicrobial prescribing. 2018. — link

FeverPAIN Score for Strep Pharyngitis

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