Bio Andrew âAndyâ Lambros is a web and graphic designer, developer, marketing expert and business consultant. He is the Co-founder and President of the Dream Builders Company, located just outside of Los Angeles, in Southern California.
I have a 3 year old with a sore in his mouth. It is between his upper lip and his gums at the very top. It looks like a white circle and it has a red streak coming down to his teeth.
Quick Answer. Cold sores usually go way within 2 weeks, although they can go away in just 2 to 3 days. Cold sores are also known as fever blisters. They are small blisters that generally cluster around the mouth.