Zusammenfassung
Die lineare Ig(Immunglobulin)A-Dermatose gehört zu den seltenen blasenbildenden Autoimmundermatosen und kann sich sowohl im Kindesalter als auch im Erwachsenenalter manifestieren. Perlschnurartig/rosettenartig angeordnete pralle Blasen („crown of jewels“) und urtikarielle Plaques, begleitet von starkem Juckreiz, können am ganzen Integument mit Betonung des Kopfes und der anogenitalen Region auftreten. Namensgebend ist die direkte Immunfluoreszenz (DIF), die eine lineare Anordnung von IgA-Autoantikörper entlang der Basalmembran zeigt. Eine histologische und klinische Ähnlichkeit zur Dermatitis herpetiformis Duhring ist gegeben.
Abstract
Linear IgA bullous dermatosis is a rare autoimmune blistering disease that occurs in both children and adults. Strings of pearls, crowns of jewels, rosettes and urticarial plaques can occur on the whole integument with emphasis on the face (particularly perioral area) and genitalia. Pruritus is common and may be severe. The presence of IgA deposits along the basement membrane can usually be identified using direct immunofluorescence (DIF) microscopy. The histological and clinical features of this disorder may mimic those of dermatitis herpetiformis.
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Juratli, H.A., Sárdy, M. Lineare IgA-Dermatose. Hautarzt 70, 254–259 (2019). https://doi.org/10.1007/s00105-019-4377-9
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DOI: https://doi.org/10.1007/s00105-019-4377-9