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.
Make sure you have a cold sore. A cold sore is the same as a fever blister, but it is not the same as a canker sore. Canker sores are mouth ulcers that occur inside the mouth. While cold sores may on occasion develop inside the mouth, they are usually smaller than canker sores, and they start as blisters. You may be able to feel a small bump or hardness in the skin in conjunction with the tingling sensation. 2  Other early symptoms include, itching of the lips or skin around mouth, sore throat, swollen glands, and pain when swallowing, and a fever.