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Pyoderma gangrenosum: the great pretender and a challenging diagnosis

Wendy W Wong1, Gustavo R Machado, Michael E Hill

  • 1Department of Plastic Surgery, Loma Linda University, Loma Linda, CA, USA. wewong@llu.edu

Journal of Cutaneous Medicine and Surgery
|December 29, 2011
PubMed
Abstract

Insights

Pyoderma gangrenosum (PG) is often misdiagnosed as infection, leading to harmful treatments like debridement. Early recognition and appropriate therapy, such as corticosteroids, are crucial for managing this rare skin condition.

Area of Science:

  • Dermatology
  • Immunology
  • Surgical Pathology

Background:

  • Pyoderma gangrenosum (PG) mimics pyogenic infections, often leading to unnecessary surgical intervention.
  • Surgical debridement can exacerbate PG due to pathergy, worsening the condition.

Observation:

  • A review of 35 published cases of hand and digit PG, plus one new case, highlights diagnostic challenges.
  • Many patients (29/35) were initially misdiagnosed with infection and received antibiotic treatment.
  • A significant subset (13/35) underwent debridement, which worsened their lesions.

Findings:

  • Misdiagnosis as infection is common in pyoderma gangrenosum, particularly affecting the hands and digits.
  • Associated medical conditions, including inflammatory bowel disease and cancer, were present in 28 patients.
  • Delayed or incorrect treatment, including debridement, leads to disease progression.

Implications:

  • Increased awareness of PG's presentation is vital to prevent misdiagnosis and inappropriate surgical treatment.
  • Prompt initiation of high-dose corticosteroids or immunomodulatory therapy is recommended for suspected PG.
  • Considering PG in non-responsive ulcerative lesions is critical for effective patient management.

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