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What Causes Canker Sores In The Mouth?

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Rachel Sharp Profile
Rachel Sharp answered
Canker sores are shallow sores inside the mouth that can be quite painful. They may appear on the inside of the lips, the insides of the cheeks, on the gums or under the tongue. They look red or sometimes appear whitish. Canker sores are not to be confused with fever blisters, which usually are on the outside of the mouth, around the lips. If there is any advantage to canker sores, at least they are not as visible as fever blisters. Still, they are a pain, quite literally!

Canker sores can affect anyone. However, they are most likely to affect women in their teens and 20s. The tendency to get canker soars may run in families. However, they aren't contagious. The exact cause of canker sores is unknown. However, doctors think that some of the causes could be stress, poor nutrition, food allergies or menstrual periods.

Canker sores usually go away on their own. Consulting a doctor is a good idea if the sores last more than two weeks, or are extremely sore, making it difficult to eat.
Anonymous Profile
Anonymous answered


Canker sores are shallow sores inside the mouth that can be quite painful. They may appear on the inside of the lips, the insides of the cheeks, on the gums or under the tongue. They look red or sometimes appear whitish. Canker sores are not to be confused with fever blisters, which usually are on the outside of the mouth, around the lips. If there is any advantage to canker sores, at least they are not as visible as fever blisters. Still, they are a pain, quite literally!

Canker sores can affect anyone. However, they are most likely to affect women in their teens and 20s. The tendency to get canker soars may run in families. However, they aren't contagious. The exact cause of canker sores is unknown. However, doctors think that some of the causes could be stress, poor nutrition, food allergies or menstrual periods.

Canker sores usually go away on their own. Consulting a doctor is a good idea if the sores last for 2 weeks

Anonymous Profile
Anonymous answered
Could be Thrush.. I had it for a while before the nurse practitioner diagnosed it after the doctor I first saw didn't even mention it. Do you swim in a public pool? Also, I get canker sores from aspartame or any artificial sweetener.. My body doesn't like it for some reason. Just some thoughts. You'll need antibiotics for the thrush, so you should get to a doctor.
Kavita sk Profile
Kavita sk answered

Causes of Canker Sores:

Canker sore also known as Mouth ulsers

Most of the time mouth ulcer appears inside the lips, cheeks, on the tongue and other parts of the mouth. Eating excess junk food, hormonal imbalance, constipation, acidity, stress, heredity and mall-nourishment a nd lack of such nutrients and vitamins like B complex, iron and vitamin C are prior causes of mouth ulcer.

How to Cure Canker sore or Mouth Ulcers Fast ?

Nestor Stark Profile
Nestor Stark answered

Canker sores are also known as aphthous ulcers. There is definite cause of canker sores. They can occur because of bacterial infections, immunological auto-antibodies formation, lack of vitamin c or folic acid. Stress, trauma, endocrinal disturbances etc increase the incidence of canker sores. Canker sores are self limiting and heal on its own in 7-10 days. For more info on canker sores, refer to Home remedies for mouth ulcers you get plenty of knowledge.

Anonymous Profile
Anonymous answered
I have no idea what would cause this nightmare,however, if you have this affliction, get to an emergency room NOW!!

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