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 are caused by the herpes simplex virus (HSV). Most cold sores are caused by the type 1 strain (HSV-1). The type 2 HSV strain (HSV-2) usually causes genital herpes but very occasionally can cause cold sores around the mouth. See separate leaflet called Genital Herpes for more details. A first cold sore usually occurs in childhood.