Cold sore or corn?: Cold sores are painful liquid filled blisters that can occur on the lips, roof of the mouth or the gums which are caused by the herpes simplex virus (hsv-1). Tingling &/or pain can herald the oncoming of cold sore 1 to 2 days prior to eruption. 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.
Answered 9/11/2013
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