Variable: Cold sores are painful liquid filled blisters that can occur on the lips, roof of the mouth or the gums which are usually 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.
Answered 1/7/2016
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Cold sores: are caused by the herpes simplex virus. You can see your doctor to see if these bumps are cold sores or something else.
Answered 5/29/2018
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