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A member asked:
What can lead to cold sore on your lip?
4 doctors weighed in across 2 answers
Herpes Simplex virus: An estimated 80% of americans have been exposed to herpes simplex virus type 1. However, not all of those people will get cold sores. It depends on your immune system.
Answered 10/24/2017
4.7k views
Herpes: There are two herpes viruses. Both can lead to blisters, commonly called cold sores when on the mouth or lips. 95% of the lesions are caused by herpes type one or herpes simplex. Most people infected with herpes do not have recurring outbreaks, but can still be contagious. 75% of americans have been infected with this virus and most got infected during childhood from family members.
Answered 12/18/2013
4.7k views
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