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Bullous pemphigoid is an autoimmune pruritic skin disease that typically occurs in people aged over 60, that may involve the formation of blisters (bullae) in the space between the epidermal and dermal skin layers. It is classified as a type II hypersensitivity reaction, which involves formation of anti-hemidesmosome antibodies, causing a loss of keratinocytes to basement membrane adhesion.
Prurigo nodularis (PN), also known as nodular prurigo, is a skin disease characterised by pruritic (itchy) nodules which usually appear on the arms or legs. Patients often present with multiple excoriated lesions caused by scratching. PN is also known as Hyde prurigo nodularis, Picker's nodules, atypical nodular form of neurodermatitis circumscripta, lichen corneus obtusus.
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, but, unlike pemphigus, pemphigoid does not feature acantholysis, a loss of connections between skin cells.
Gestational pemphigoid (GP) is a rare autoimmune variant of the skin disease bullous pemphigoid, and first appears in pregnancy. It presents with tense blisters, small bumps, hives and intense itching, usually starting around the navel before spreading to limbs in mid-pregnancy or shortly after delivery. The head, face and mouth are not usually affected.
Epidermolysis bullosa acquisita, also known as acquired epidermolysis bullosa, is a longterm autoimmune blistering skin disease. It generally presents with fragile skin that blisters and becomes red with or without trauma. Marked scarring is left with thin skin, milia and nail changes. It typically begins around age 50.
Linear IgA bullous dermatosis is a rare immune-mediated blistering skin disease frequently associated with medication exposure, especially vancomycin, with men and women being equally affected. It was first described by Tadeusz Chorzelski in 1979 and may be divided into two types:
Vesicular pemphigoid is a cutaneous condition, a clinical variant of bullous pemphigoid, characterized by a dermatitis herpetiformis-like presentation with grouped small tense blisters.
Vulvar childhood pemphigoid is a cutaneous condition, a childhood form of bullous pemphigoid, peculiar variant with involvement of the genital area and perineum.
Mucous membrane pemphigoid is a rare chronic autoimmune subepithelial blistering disease characterized by erosive lesions of the mucous membranes and skin. It is one of the pemphigoid diseases that can result in scarring.
References
- ↑ Rapini, Ronald P.; Bolognia, Jean L.; Jorizzo, Joseph L. (2007). Dermatology: 2-Volume Set. St. Louis: Mosby. ISBN 978-1-4160-2999-1.
- ↑ Thomas T. Provost; John A. Flynn (2001). Cutaneous medicine: cutaneous manifestations of systemic disease. PMPH-USA. pp. 6–. ISBN 978-1-55009-100-7 . Retrieved 25 June 2010.
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