If you've ever had a canker sore, you know that these small mouth sores can cause
A canker sore can show up on the inside of your lip or cheek, under your tongue
or at the base of your gums. Usually, canker sores form one at a time, but sometimes
they show up in a little cluster.
Canker sores usually go away on their own and they're not contagious. So no one
can catch a canker sore by kissing you or sharing your drink.
What Are the Signs of a Canker Sore?
Canker sores are round and usually about the size of a kernel of corn (¼
inch, or 6 millimeters), but they can be bigger. If you look in the mirror at your
canker sore, it will be white or yellow with a red border.
Canker sores hurt, especially if you eat something hard, crunchy, salty, or acidic
(like orange juice).
What Causes Canker Sores?
No one really knows what causes canker sores. But stress might make a person more
likely to get one. A canker sore also may spring up if a person's diet doesn't contain
enough vitamins and minerals.
The inside of your mouth is delicate, so mouth injuries, such as biting the inside
of your lip or brushing your teeth
too hard, also seem to bring on canker sores.
Anybody can get a canker sore and they may run in families, which means that if
your mom or dad gets canker sores, you might get them too.
Cold sores (fever
blisters) are a different kind of mouth sore and are caused by a virus. Cold sores
and fever blisters often form outside the mouth, around the lips, on the cheeks or
chin, or inside the nostrils of the nose. Unlike canker sores, those sores are contagious.
How Are Canker Sores Treated?
Most canker sores don't hurt as much after the first few days, but it may take
2 weeks for the sore to heal. While you're waiting, be careful when eating and brushing
your teeth. Drinking through a straw can help. Scraping the sore can make it hurt
worse. You might need some medicine to dull the pain. Your mom or dad can ask your
doctor about which one is best for you.
If your canker sore is big, lasts longer than a week, or is keeping you from eating,
see your doctor or dentist. He or she may prescribe a medicine or special mouthwash
to help heal the sores.
Can I Prevent Canker Sores?
There's no sure way to prevent canker sores, but it's a good idea to eat healthy,
get enough sleep, and
try not to get too worried or upset. Put canker sores on the list of things you don't
have to worry about. They hurt for a little while, but before you know it, they'll