The relationship between linear IgA disease and benign mucous membrane pemphigoid

Area of Science:

• Ophthalmology
• Dermatology
• Immunology

Background:

• Linear IgA disease (LAD) and benign mucous membrane pemphigoid (BMMP) are rare autoimmune blistering disorders.
• Oral and ocular manifestations are significant in these conditions, impacting patient quality of life.

Purpose of the Study:

• To investigate the prevalence of oral and ocular involvement in patients diagnosed with LAD.
• To evaluate the clinical presentation and ophthalmological findings in patients with BMMP.
• To explore potential shared pathogenic mechanisms between LAD and BMMP.

Main Methods:

• Retrospective analysis of 34 patients with LAD and 27 patients with BMMP.
• Clinical examination for oral ulceration, conjunctivitis, and skin lesions.
• Ophthalmological assessment by a single specialist.

Main Results:

• Nine out of 34 LAD patients had oral ulceration; four of seven examined had cicatricial conjunctivitis.
• Among BMMP patients, oral symptoms alone were present in nine, ocular symptoms alone in nine, and combined in seven.
• Six of nine BMMP patients with oral symptoms alone showed cicatricial conjunctivitis, four with erosive gingivitis.

Conclusions:

• All patients with LAD require thorough oral and ophthalmological evaluation due to high rates of mucosal lesions.
• Ophthalmological assessment is recommended for all BMMP patients presenting with oral symptoms, including erosive gingivitis.
• Shared clinical features and IgA deposits suggest a potential common pathogenic pathway in LAD and BMMP.