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.
1 It may help to remember that canker sores occur inside the mouth, while cold sores usually occur outside the mouth. 2  Canker sores can recur, and can be minor (small), major (larger) or herpetiform (multiple, in groups or clusters).3  Canker sores are common and often recur. Symptoms include white spots inside the mouth or on the tongue, sore throat and difficulty swallowing. 2  Canker sores â these are small white or yellow center lesions with a red border. 3  They develop in the mouth on the tongue, inside cheek areas, lips, gum line and throat area. 4  They are not contagious.