Pyoderma gangrenosum with common variable immunodeficiency

Area of Science:

• Dermatology
• Immunology

Background:

• Pyoderma gangrenosum (PG) is a rare, ulcerative skin condition with an unknown cause.
• PG can manifest on healthy skin or after trauma, and is linked to systemic diseases like inflammatory bowel disease and vasculitis.

Observation:

• A patient with a history of injection site abscesses and splenectomy presented with a subcutaneous abscess.
• The abscess rapidly evolved into an ulcer post-drainage.

Findings:

• The patient was diagnosed with pyoderma gangrenosum.
• Common variable immunodeficiency was identified as a co-occurring condition.

Implications:

• Incorrect management, such as abscess drainage, can exacerbate PG lesions.
• Accurate diagnosis based on clinical history and examination is crucial for effective PG treatment.
• This case underscores the importance of considering PG in patients with specific risk factors and atypical presentations.