Skip to main content
SLU publication database (SLUpub)

Research article2006Peer reviewedOpen access

Summer eczema in exported Icelandic horses: influence of environmental and genetic factors

Bjornsdottir S, Sigvaldadottir J, Brostrom H, Langvad B, Sigurdsson A


A cross sectional study was designed to estimate the prevalence of summer eczema ( a chronic, recurrent seasonal dermatitis) in exported Icelandic horses and the influence of environmental and genetic factors on the development of the disease. Among 330 horses, which had been exported to Germany, Denmark and Sweden, 114 ( 34.5%) were found to have clinical signs of summer eczema. The prevalence was highest 2 years after export and the exposure to the biting midges Culicoides spp., was found to be the main risk factor for developing the disease. Genetic influence on the sensitivity for the disease was not established. It was concluded that exported Icelandic horses are predisposed for summer dermatitis and the fact that they are not introduced to the antigens of the biting midges early in live, due to it's absence in Iceland, is likely to explain the high prevalence of the disease after export


Summer eczema; Icelandic horses; environmental and genetic factors

Published in

Acta Veterinaria Scandinavica
2006, Volume: 48, article number: 3Publisher: BIOMED CENTRAL LTD

      SLU Authors

      UKÄ Subject classification

      Animal and Dairy Science
      Veterinary Science

      Publication identifier


      Permanent link to this page (URI)