What Causes Fever Blisters?
Cold Sores / Fever Blisters Fever blister, also known as cold sores are a nuisance that causes annoyance and discomfort to millions of Americans. The condition is caused by a contagious herpes virus, either herpes simplex one or herpes simplex 2. Over 95% of cases are caused by herpes simplex virus one (HSV1). The virus …
