What is the role of vaccines in the etiology of guttate psoriasis?

Updated: Oct 16, 2020
  • Author: Kirstin Altman, MD; Chief Editor: Dirk M Elston, MD  more...
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Over the past years, concerns have been raised about vaccination as a possible trigger for new onset of psoriasis or exacerbation of existing disease. Several small studies have reported an association between influenza vaccination in the 2009-2010 flu season and psoriasis. Most cases presented as mixed/guttate psoriasis. [46] More studies are necessary for further evaluation, but a study by Sbidian et al suggested a very low incidence of associated cases and emphasized the relative safety and relevance of vaccinations. [47]

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