Fever Blister? Or Canker Sore?

Oral lesions are fairly commonplace, and usually referred to as cold sores. But did you know that there are really two different types?

Fever blisters are fluid-filled blisters that commonly occur on the lips, but can also occur on the gums and the roof of the mouth. Pain typically precedes the appearance of a lesion by a few days. The blisters typically rupture within hours, and then crust over. During the time the blister ruptures until the sore is completely healed is when the greatest risk of spread occurs.

Canker sores, on the other hand, are small red or white shallow ulcers occurring on the tongue, soft palate or inside the lips and cheeks – unlike fever blisters they do not occur on the roof of the mouth or the gums. Furthermore, they are not contagious because they are not caused by bacteria or viral agents, so there is no concern of spreading to other areas or other people.

The important thing to note is that you should see a physician if a mouth sore has not healed within two weeks. Mouth sores offer an easy way for germs and viruses to get into the body, making it extremely easy for infections to develop.

The doctors and staff at Alexandria Otolaryngology Associates are here to help answer any and all of your questions. Please don’t ever hesitate to give us a call or stop by our two locations.

In the mean time, you can learn more about oral lesions by visiting our online library.