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The bullae are formed by an immune reaction, initiated by the formation of IgG [citation needed] autoantibodies targeting dystonin, also called bullous pemphigoid antigen 1, [6] and/or type XVII collagen, also called bullous pemphigoid antigen 2, [7] which is a component of hemidesmosomes. A different form of dystonin is associated with ...
It is absent in bullous pemphigoid, making it useful for differential diagnosis. This histological feature is also seen in herpes simplex infections (HSV 1 and 2) and varicella zoster infections (chicken pox and shingles).
Pemphigoid is a group of rare autoimmune blistering diseases of the skin and mucous membranes.As its name indicates, pemphigoid is similar in general appearance to pemphigus, [1] however unlike pemphigus, pemphigoid does not feature acantholysis, a loss of connections between skin cells.
Gestational pemphigoid: IgG1: NC16A terminal of BPAG2 BPAG1: 180 230 Cicatricial pemphigoid: C-terminal of BPAG2: 180 Ocular cicatricial pemphigoid: Integrin beta-4 subunit: 200 Antiepiligrin cicatricial pemphigoid [nb 1] Laminin 5 (Epiligrin, Laminin 332) Linear IgA bullous dermatosis: LAD1 portion of BPAG2 Collagen type VII: 97 290/145 ...
Prevesicular stage of bullous pemphigoid Image at right shows influx of inflammatory cells including eosinophils and neutrophils in the dermis (solid arrow) and blister cavity (dashed arrows), and deposition of fibrin (asterisks). [15] However, the diagnosis of bullous pemphigoid consist of at least 2 positive results out of 3 criteria: [19]
Antibody isotype(s) and location of antibody deposition in immunofluorescence studies using salt-split skin for autoimmune bullous conditions targeting the basement membrane zone of the human integumentary system Condition Antibody isotype(s) deposited Localization of antibody with use of salt-split skin Antiepilegrin cicatricial pemphigoid ...
[6] [7] It is useful in differentiating between the diagnosis of pemphigus vulgaris or mucous membrane pemphigoid (where the sign is present) and bullous pemphigoid (where it is absent). The Nikolsky sign is dislodgement of intact superficial epidermis by a shearing force, indicating a plane of cleavage in the skin epidermal-epidermal junctions ...
Bullous pemphigoid; Bullous lupus erythematosus; Childhood linear IgA disease (chronic bullous disease of childhood) Cicatricial pemphigoid (benign mucosal pemphigoid, benign mucous membrane pemphigoid, ocular pemphigus, scarring pemphigoid) Dermatitis herpetiformis (Duhring disease)