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Updated: Feb 17, 2026

Technique of Conjunctival Biopsy and Direct Immunofluorescence for Diagnosing Mucous Membrane Pemphigoid
Published on: June 17, 2025
Bullous pemphigoid with a prolonged prodrome.
Tomomi Nakatani1, Makoto Inaoki, Kazuhiko Takehara
1Department of Dermatology Kanazawa University Graduate School of Medical Science, Shimoishibiki-machi, Kanazawa, Japan.
Bullous pemphigoid, an autoimmune skin disease, can present with long-lasting eczematous eruptions before blistering occurs. Persistent itchy rashes in elderly individuals may signal this condition, requiring careful monitoring.
Area of Science:
- Dermatology
- Autoimmune Diseases
- Geriatrics
Background:
- Bullous pemphigoid is a significant autoimmune blistering disease primarily affecting the elderly.
- It is often characterized by prodromal phases that can manifest as various skin eruptions.
Observation:
- This case highlights an 11-year prodromal eczematous eruption preceding the onset of bullous pemphigoid.
- The prolonged duration of the eczematous phase is unusual for this condition.
Findings:
- The study identifies a rare presentation of bullous pemphigoid with an extended eczematous prodrome.
- This suggests that the spectrum of prodromal symptoms for bullous pemphigoid may be broader than previously recognized.
Implications:
- Clinicians should consider bullous pemphigoid in elderly patients with persistent, unexplained pruritic or eczematous skin conditions.
- Early recognition of atypical presentations can potentially lead to earlier diagnosis and management of bullous pemphigoid.
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