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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 ...
Mucous membrane pemphigoid is a rare chronic autoimmune subepithelial blistering disease characterized by erosive lesions of the mucous membranes and skin. [3] It is one of the pemphigoid diseases that can result in scarring.
Other than that, oral hygiene instructions should be given to patients as oral care is a critical part in treating mucous membrane pemphigoid. [51] Before meals, patients are advised to rinse with hydrogen peroxide (diluted with water to a concentration of 1:4 or 1:6) and diphenhydramine to reduce the pain.
It is also commonly diagnosed by specialists practicing otolaryngology- head and neck surgery, periodontists, oral and maxillofacial surgeons, and eye doctors, as lesions can affect the eyes and mucous membranes of the oral cavity. Intraorally, it resembles the more common diseases lichen planus and mucous membrane pemphigoid. [13]
Desquamative gingivitis is a descriptive clinical term, not a diagnosis. [1] Dermatologic conditions cause about 75% of cases of desquamative gingivitis, and over 95% of the dermatologic cases are accounted for by either oral lichen planus or cicatricial pemphigoid. [1]
Bites and stings as well as other conditions (e.g. drug reactions, urticarial reactions, and early bullous pemphigoid) can cause microscopic changes such as a wedge-shaped superficial dermal perivascular infiltrate consisting of abundant lymphocytes and scattered eosinophils, as shown in the adjacent figure: [12]
The number of target antigens varies on a case by case basis. The variability is likely what accounts for the different presentations of PNP. Through immunoprecipitation, target antigens have been found to include desmoglein-3, desmoglein-1, envoplakin, periplakin, desmoplakin 1, desmoplakin 2, and bullous pemphigoid antigen I. [citation needed]
A vesiculobullous disease is a type of mucocutaneous disease characterized by vesicles and bullae (i.e. blisters).Both vesicles and bullae are fluid-filled lesions, and they are distinguished by size (vesicles being less than 5–10 mm and bulla being larger than 5–10 mm, depending upon which definition is used).