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.
If the sore has already erupted and is beginning to scab, use an over-the-counter medication like Abreva to help ease symptoms and reduce redness. Cold sores typically last 7 to 10 days, so it all depends on how early you catch and treat it, says Dr. Welsh. Cold sores are caused by the herpes simplex 1 virus and don't pop up unless something triggers them -- usually stress or overexposure to the sun.