Fever Blisters

Fever blisters one of the most common disorders of the mouth, causing discomfort and annoyance to millions of Americans. Fever Blisers cause small sores to develop in or around the mouth, and often are confused with Canker sores.

Canker sores, however, occur only inside the mouth--on the tongue and the inside linings of the cheeks, lips and throat. Fever blisters, also called cold sores, usually occur outside the mouth--on the lips, chin, cheeks or in the nostrils.

When fever blisters do occur inside the mouth, it is usually on the gums or the roof of the mouth. Inside the mouth, fever blisters are smaller than canker sores, heal more quickly, and often begin as a blister.