A member asked:

Dark, red blister like patch/spot on my bottom lip. never had cold sore before so what could this be?

A doctor has provided 1 answer
Dr. Heidi Fowler answered

Specializes in Psychiatry

Uncertain: 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 5/8/2015

2.9k views

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