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.
Cold sores. Cold sores are caused by a virus called herpes simplex virus (HSV). Cold sores are very common. About 20% of children will have been infected by the age of 5 years and about 80% of people will have been infected by the time they are adults. After the first infection, the virus that causes cold sores 'hides' in the nerves of the skin (usually around the lips), and can cause new cold sores from time to time.