Revised Jones Criteria for Acute Rheumatic Fever (2015)

Diagnostic Requirements

• The American Heart Association (AHA) requires documented recent group A streptococcal (GAS) infection plus either two major manifestations or one major and two minor manifestations; thresholds differ by population risk. 1, 2
• Evidence of preceding GAS infection may be established by a positive throat culture or rapid antigen detection test. 1, 2
• For an initial episode of ARF, diagnosis is made when the patient meets 2 major or 1 major + 2 minor criteria. 2
• For a recurrent episode of ARF, diagnosis is made when the patient meets 2 major, 1 major + 2 minor, or 3 minor criteria. 2

Population Risk Stratification

• Low‑risk populations are defined as an ARF incidence ≤ 2 per 100,000 school‑aged children per year or a rheumatic heart disease (RHD) prevalence ≤ 1 per 1,000 population per year. 1, 2
• Moderate‑to‑high‑risk populations exceed these thresholds and therefore require the more sensitive (but less specific) diagnostic thresholds. 1, 2

Major Criteria

Low‑Risk Populations

• Carditis – clinical signs or subclinical involvement detected by Doppler echocardiography. 1, 2
• Polyarthritis – involvement of ≥ 2 joints; monoarthritis does not qualify. 1, 2
• Sydenham’s chorea (neurologic manifestation). 1, 2
• Erythema marginatum – evanescent pink rash with pale centers and serpiginous margins on trunk and proximal extremities; never facial, blanches with pressure. 1, 2
• Subcutaneous nodules – firm, painless nodules over bony prominences (knees, elbows, wrists, occiput, spinous processes). 1, 2

Moderate‑to‑High‑Risk Populations (in addition to the above)

• Monoarthritis – single joint involvement counted as a major criterion. 1, 2

• Polyarthralgia – joint pain without swelling, after exclusion of other causes, counted as a major criterion. 1, 2

• Critical pitfall: A joint manifestation can be counted either as a major or a minor criterion, never both in the same patient. 1, 2
• Critical pitfall: Erythema marginatum and subcutaneous nodules rarely appear in isolation; they are almost always accompanied by carditis. 1, 2

Minor Criteria

Low‑Risk Populations

• Polyarthralgia (joint pain without swelling). 1, 2
• Fever ≥ 38.5 °C. 1, 2
• Elevated inflammatory markers – erythrocyte sedimentation rate (ESR) ≥ 60 mm/h or C‑reactive protein (CRP) ≥ 3.0 mg/dL. 1, 2
• Prolonged PR interval on ECG (unless carditis is already a major criterion). 1, 2

Moderate‑to‑High‑Risk Populations

• Monoarthralgia (lower threshold than polyarthralgia). 1, 2
• Fever ≥ 38 °C (lower threshold). 1, 2
• Elevated inflammatory markers – ESR ≥ 30 mm/h or CRP ≥ 3.0 mg/dL (lower threshold). 1, 2
• Prolonged PR interval (unless carditis is already a major criterion). 1, 2

Echocardiographic Criteria (Subclinical Carditis)

• Subclinical carditis detected by Doppler echocardiography now counts as a major manifestation. 1, 2

Pathological Mitral Regurgitation

All mitral criteria are required for classification as pathological regurgitation. 1, 2

Pathological Aortic Regurgitation

All aortic criteria are required for classification as pathological regurgitation. 1, 2

• Critical pitfall: Blood pressure must be measured at the time of echocardiography because systemic pressure influences jet characteristics; peak velocity < 3.0 m/s is more likely physiological. 1
• Critical pitfall: Differentiate rheumatic valvulitis from physiological regurgitation, mitral valve prolapse, congenital valve anomalies (e.g., bicuspid aortic valve, cleft mitral valve), and infective endocarditis. 1, 2

Special Diagnostic Scenarios

• Recurrent ARF (prior ARF or established RHD): In patients with documented prior ARF/RHD and recent GAS infection, the diagnostic threshold is lowered to 2 major, 1 major + 2 minor, or 3 minor manifestations. 1, 2
• “Possible” Rheumatic Fever: When clinical suspicion remains high despite incomplete Jones criteria, repeat a detailed history, physical examination, and echocardiography at 12 months. 1
• If recurrent joint symptoms occur in a patient adherent to secondary prophylaxis without serologic evidence of GAS infection and without echocardiographic valvulitis, the symptoms are likely unrelated to ARF, and discontinuation of prophylaxis may be appropriate. 2

Differential Diagnoses to Exclude

• Infective endocarditis – must be ruled out in any patient with valvular abnormalities. 1
• Congenital valve abnormalities – such as bicuspid aortic valve or cleft mitral valve. 1
• Viral myocarditis – a potential mimic of cardiac involvement. 3
• Systemic lupus erythematosus – can present with similar cardiac and joint findings. 3

Revised 2015 Jones Criteria for Acute Rheumatic Fever

Diagnostic Framework

• The American Heart Association (AHA) recommends that a diagnosis of acute rheumatic fever requires documented recent group A streptococcal infection plus either two major clinical manifestations or one major plus two minor manifestations; the specific thresholds differ for low‑risk versus moderate‑to‑high‑risk populations. 4, 5

Population Risk Stratification

• For moderate‑to‑high‑risk groups, the fever threshold for a minor criterion is lowered to ≥ 38 °C (oral), reflecting increased sensitivity needed in these settings. 6

Major Clinical Manifestations (Cited Features)

• Erythema marginatum is described as an evanescent pink rash with pale centers and serpiginous margins on the trunk and proximal extremities; it never involves the face and blanches with pressure. 6
• Subcutaneous nodules are firm, painless nodules located over bony prominences such as knees, elbows, wrists, occiput, and spinal processes. 6

Minor Clinical Manifestations (Cited Features)

• Fever as a minor criterion is defined as ≥ 38 °C (oral) in moderate‑to‑high‑risk populations, a lower threshold than the ≥ 38.5 °C used for low‑risk groups. 6

Subclinical Carditis

• The AHA now counts subclinical carditis detected by Doppler echocardiography as a major manifestation—a key change from the 1992 criteria. 4, 5

Recurrent or Established Rheumatic Fever

• In patients with a prior episode of rheumatic fever or established rheumatic heart disease who have a new streptococcal infection, the diagnostic threshold is reduced to any of the following:
  
  • Two major manifestations, or
  • One major plus two minor manifestations, or
  • Three minor manifestations. 4
• When only minor manifestations are present, other causes must be excluded before confirming recurrent acute rheumatic fever. 4

“Possible” Rheumatic Fever Management

• If clinical suspicion remains high despite incomplete Jones criteria, the AHA advises a 12‑month course of secondary prophylaxis followed by repeat detailed history, physical examination, and echocardiography. 4
• If recurrent joint symptoms occur in a patient adherent to prophylaxis without serologic evidence of streptococcal infection and without echocardiographic valvulitis, the symptoms are likely unrelated to rheumatic fever, and discontinuation of prophylaxis may be appropriate. 4

Diagnostic Pitfalls (Cited Observations)

• Normal erythrocyte sedimentation rate (ESR) and C‑reactive protein (CRP) levels should prompt serious reconsideration of an acute rheumatic fever diagnosis, except in cases presenting solely with chorea, where inflammatory markers can be normal. 6
• Fever associated with acute rheumatic fever typically exceeds 38.5 °C orally; widespread use of antipyretics necessitates a thorough history to accurately assess fever patterns. 6
• Worsening choreiform movements in a child with prior low‑grade residual chorea may be difficult to differentiate from a new rheumatic fever attack. 6