Mucous membrane pemphigoid (MMP, cicatricial pemphigoid) is a chronic autoimmune subepithelial blistering disease primarily affecting mucous membranes (oral, conjunctival, nasopharyngeal, esophageal, genital, laryngeal), caused by IgG/IgA autoantibodies against BP180 (most common), laminin-332, BP230, alpha6beta4 integrin, and collagen XVII at the basement membrane zone, triggering complement C3/C5a-mediated neutrophil/eosinophil degranulation and progressive fibrotic scarring. MMP involves NF-kB amplification, TGF-beta fibrosis, and IL-17 mucosal scarring. Conjunctival MMP can cause blindness; laryngeal MMP can cause asphyxia. Sea moss fucoidan modulates complement C3/C5a and NF-kB; selenium supports mucosal GPx; zinc supports mucosal barrier repair; omega-3 modulates eicosanoid mucosal inflammation. Dapsone, prednisone, cyclophosphamide, and rituximab are standard.

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