![HCV](https://www.nationalelfservice.net/cms/wp-content/uploads/2017/11/HCV-150x150.png)
This review of the association between hepatitis C virus (HCV) and oral lichen planus (OLP) identified 19 case-controlled studies. While a 6-fold increase in risk of HCV infection was noted in OLP patients a majority of the studies took place in areas with high endemic HCV rates and there is some concern regarding publication bias and the quality of the available studies.
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