What is the evidence of a familial etiology for granuloma annulare?

Updated: Oct 29, 2018
  • Author: Ruby Ghadially, MBChB, FRCP(C)Derm; Chief Editor: William D James, MD  more...
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Answer

Familial cases of granuloma annulare observed in identical twins and siblings in several generations, along with an association of granuloma annulare with HLA phenotypes, suggest the possibility of a hereditary component in some cases. The HLA-B8 level has been reported to be increased in localized granuloma annulare; HLA-A29 and HLA-BW35 levels are reported to be increased in generalized granuloma annulare.


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