Fournier's Gangrene

Matthew DeLaney, MD, FACEP, FAAEM and Tim Montrief MD, MPH

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The summary below is from an episode of ERcast: Clinical Perspectives

Fournier’s gangrene is a rare but time-critical necrotizing soft tissue infection of the perineum that often presents subtly before declaring itself as sepsis or shock. The key emergency medicine move is recognizing that this is fascial spread, not simple cellulitis, and moving early on resuscitation, broad-spectrum antibiotics, and surgery.

Recognition and Diagnosis

Fascial plane infection: Fournier’s gangrene is not just cellulitis; it is a polymicrobial necrotizing infection tracking through perineal fascial planes, which is why early skin findings can look deceptively mild.
Typical presenting complaints: Swelling, pain, and erythema are the most common early complaints, while pain out of proportion should raise concern even before bullae, necrosis, or crepitus appear.
Occult sepsis source: Sepsis without a source should prompt a groin and perineal exam, because Fournier’s can present subacutely over days to weeks before hypotension makes the diagnosis obvious. That bedside search pattern is worth hearing in the episode.
Risk factor pattern: Older age, diabetes, obesity, immunocompromise, alcohol or injection drug use, and male sex all shift the pretest probability upward when perineal symptoms seem otherwise routine.
Limits of testing: No single lab test rules Fournier’s in or out, and LRINEC is not reliable enough for exclusion; even low scores have occurred in necrotizing soft tissue infection.
Imaging clues: CT with IV contrast is the first-choice study when imaging is needed, while POCUS may show thickened tissue, cobblestoning, and subcutaneous gas with a classic snow globe appearance.

Sources and Initial Management

Common anatomic sources: The infection most often starts from a GI source, with GU sources next and cutaneous sources least common, so perianal, rectal, and urologic complaints deserve a wider lens.
Straightforward treatment priorities: Management hinges on three moves: hemodynamic resuscitation, broad-spectrum antimicrobials, and operative debridement, with delay to the OR driving tissue loss and mortality.
Early surgical involvement: Call surgery as soon as Fournier’s is on the table, because they can mobilize the OR, guide imaging decisions, and coordinate the specialty support these patients often need.
Headline antibiotic approach: Empiric therapy needs broad polymicrobial coverage, typically with piperacillin-tazobactam or meropenem plus vancomycin and clindamycin, with a few situational additions we get into in the episode.
Transfer threshold mindset: Err early toward transfer when local operative or reconstructive resources are limited, since definitive management often requires a center that can support complex debridement and critical care.

Subscribe to ERcast: Clinical Perspectives to listen to the episode.

References:

Montrief T, et al. Fournier Gangrene: A Review for Emergency Clinicians. J Emerg Med. 2019 Oct;57(4):488-500. Epub 2019 Aug 28. PMID: 31472943
Auerbach J, et al. Fournier Gangrene in the Emergency Department: Diagnostic Dilemmas, Treatments and Current Perspectives. Open Access Emerg Med. 2020 Nov 9;12:353-364. PMID: 33204184.
Ferreira PC, et al. Fournier's gangrene: a review of 43 reconstructive cases. Plast Reconstr Surg. 2007;119(1):175-184. PMID: 17255671
Goh T, et al. Early diagnosis of necrotizing fasciitis. Br J Surg. 2014;101(1):e119-e125. PMID: 24338771

Faculty

Matthew DeLaney, MD, FACEP, FAAEM
Dr. Matthew DeLaney is an emergency medicine physician and educator based in Birmingham, Alabama. A native of Mobile, he earned his medical degree from the University of South Alabama and completed his emergency medicine residency at Maine Medical Center.Dr. DeLaney has experience in both community and academic emergency medicine and is known for his commitment to teaching and medical education. He lives in Birmingham with his wife, Erin, who is also a physician, and their two daughters.
Tim Montrief MD, MPH
Dr. Timothy Montrief is an emergency medicine and critical care physician, educator, and author with interests in resuscitation, airway management, critical care, and medical education. He earned his MD and MPH degrees from the University of Miami Miller School of Medicine and completed his emergency medicine training at Jackson Memorial Hospital/University of Miami, followed by additional fellowship training in critical care medicine. Dr. Montrief has contributed extensively to emergency medicine education through academic publications, digital learning platforms, and FOAMed initiatives, including work with emDocs. His academic work has focused on critical care, ultrasound, toxicology, airway management, and high-risk emergency medicine presentations. Outside of medicine, he enjoys cooking, skydiving, and spending time near the ocean.