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Dermatitis herpetiformis in siblings

N Chmurova1, Z Parnicka, D Svecova

  • 1Department of Dermatovenerology, Faculty of Medicine, Comenius University, Mickiewiczova 13, SK-813 69 Bratislava 1, Slovakia. nada.chmuroav@centrum.sk

Bratislavske Lekarske Listy
|March 4, 2008
PubMed

Insights

Dermatitis herpetiformis (DH) can present differently in families, even in sisters. This case highlights the genetic link of DH to autoimmune disorders and the HLA-DQB1*0201 allele.

Area of Science:

  • Immunodermatology
  • Genetics
  • Autoimmunity

Background:

  • Dermatitis herpetiformis (DH) is a chronic autoimmune blistering skin condition.
  • DH is strongly associated with celiac disease (CD) and specific HLA alleles.

Observation:

  • Two sisters presented with DH, but with differing clinical courses and comorbidities.
  • One sister had DH, CD, and autoimmune thyroid disease, while the other had only DH.
  • The sisters shared homozygous HLA-DQB1*0201 alleles.

Findings:

  • Confirms the association between DH and other autoimmune disorders.
  • Reinforces the established link between DH and the HLA-DQB1*0201 allele.
  • Suggests a potential familial predisposition to DH, challenging its general classification.

Implications:

  • Highlights the importance of HLA typing in understanding DH pathogenesis.
  • Suggests that genetic factors may play a more significant role in DH familial occurrence.
  • Emphasizes the need for comprehensive screening for associated autoimmune conditions in familial DH cases.

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