Lemierre Risk Flags: Warning signs for Fusobacterium necrophorum infection and septic thrombophlebitis after pharyngitis.
Assessment Tier
Low
Score 0
Classic Lemierre red flags are limited.
Verified
Last Review: 2026-07-17
Use during early bedside triage when infection severity or treatment escalation is uncertain.
Support clinician judgement with a structured review of the highest-yield risk factors.
Standardise communication between admitting, ID, ICU, and pharmacy teams.
Unilateral neck swelling/pain (+2)
Toxic appearance or septic physiology (+2)
Recent severe pharyngitis (+1)
Pulmonary septic emboli symptoms (+2)
Internal jugular tenderness (+2)
Young adult with rapidly worsening course (+1)
Interpret the result together with source control, microbiology, host factors, and trajectory.
Escalate imaging, cultures, or specialist review when the tool lands in a high-risk tier.
Reassess dynamically if the patient deteriorates or new microbiology becomes available.
This tool supports structured infectious-disease decision making but does not replace clinician judgement or local guideline pathways.
This OpiCalc infectious-disease entry reflects commonly used guideline criteria and bedside risk features used in contemporary clinical practice.
Last Comprehensive Review: 2026-07-17