Localized genital bullous pemphigoid

Area of Science:

• Dermatology
• Immunodermatology
• Autoimmune Blistering Diseases

Background:

• Bullous pemphigoid (BP) is an autoimmune blistering disease targeting hemidesmosomes, crucial for epidermal adhesion.
• Genital bullous pemphigoid (GBP) is a rare, localized variant of BP, predominantly reported in women and children.
• The pathogenesis involves autoantibodies leading to subepidermal blistering and skin erosion.

Observation:

• An adult male presented with a scrotal rash and blisters progressing to erosions.
• This presentation is highly unusual, with only two prior documented cases in adult males.
• Clinical and histological findings, along with immunofluorescence, confirmed the diagnosis of bullous pemphigoid.

Findings:

• The patient's diagnosis of genital bullous pemphigoid was confirmed through standard diagnostic methods.
• Treatment with mycophenolate mofetil and doxycycline resulted in a positive clinical response.
• This case expands the limited literature on male genital bullous pemphigoid.

Implications:

• Highlights the importance of considering GBP in adult males presenting with genital blistering lesions.
• Demonstrates the efficacy of immunosuppressive therapy (mycophenolate mofetil) and antibiotics (doxycycline) in managing this rare condition.
• Contributes to understanding the clinical spectrum and management of localized bullous pemphigoid variants.