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Doctor insights on: Canker Sore White

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Dr. Daniel Rubenstein
616 doctors shared insights

Canker Sores (Definition)

Almost everyone is infected with this herpes virus. The first episode is usualy in early childhood. It is dramaticaly different from all the later events. The virus is always present. When your immune system is weakened (stress, disease, almost anything) the viri end up stronger than your immune system. They do their job, and ...Read more


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Had what looked like a canker sore/white head directly on bottom lip. Popped it and it went away. Not a cold sore. Usually get with chapped lips. ?

Had what looked like a canker sore/white head directly on bottom lip. Popped it and it went away. Not a cold sore. Usually get with chapped lips. ?

See your dentist: see your dentist. You may have had an aphthous ulcer which is very similiar and not a cold sore. It appears on soft muscosal tissue and lasts for 3-7 days. It appears from stress and iatrogenic; unknown causes. It disappears usually after 7 days but, it is red and painful. Viscous Lidocaine rinses and Lidex (fluocinonide) cream topically applied to the area help. ...Read more

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I bit my inner cheek & think I have a canker sore. Its white/yellow/swollen. It hurts! Everything feels thrown off near itWhat can I do to help this?

I bit my inner cheek & think I have a canker sore. Its white/yellow/swollen. It hurts! Everything feels thrown off near itWhat can I do to help this?

Canker sores: is the most common oral lesions. Most tongue ulcers, infections will clear up by themselves within a week or two. You should see your GP or dentist if the ulcer gets worse or lasts for longer than 2 weeks. ...Read more

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I have a sore on my bottom lip that looks like a canker sore without the white thing on top. Its recurring & lasts for a few months. No pain.

I have a sore on my bottom lip that looks like a canker sore without the white thing on top. Its recurring & lasts for a few months. No pain.

Sore on lip: Any sore that lasts longer than 7-10 days, or any sore that re-occurs should be examined and probably biopsied . See your dentist or an oral surgeon. ...Read more

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I put baking soda and water paste on my canker sore. Now the white is gone and it looks dark. Is it healing? Its swollen to.

I put baking soda and water paste on my canker sore. Now the white is gone and it looks dark. Is it healing? Its swollen to.

Maybe: I would leave it alone and if it is not improving or getting better in one to two weeks I would see a dentist or oral surgeon for an evaluation. ...Read more

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I dipped for 2 years and the other day I got a bump. It got bigger till it turned into what looks like a canker sore. But not white.Oral cancer?

I dipped for 2 years and the other day I got a bump. It got bigger till it turned into what looks like a canker sore. But not white.Oral cancer?

You should see MD: You should see an oral surgeon and have it biopsied. Absolutely, need to rule out oral cancer. Nowadays incidence of oral cancer is increasing and this is related to hpv infection. ...Read more

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Is a canker sore that is not white oral cancer?

Is a canker sore that is not white oral cancer?

Not likely: Oral cancer is progressive. Most abnormalities in the oral cavity come and go. If you have an abnormal area that lasts for more than three weeks you should have someone examine it. You can reduce your risk of oral cancer by not smoking, not chewing tobacco, not drinking too much alcohol. ...Read more

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I have 3 white canker sore like marks on back of gums and bump under jaw. Any tips?

I have 3 white canker sore like marks on back of gums and bump under jaw. Any tips?

Time: No magic bullet but topical antibiotic may possibly be helpful for some. Others have tried table salt (painful) with success. A doctor may also prescribe a cortisone paste for the condition. ...Read more

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Dr. Sandra Eleczko
506 doctors shared insights

Aphthous Stomatitis (Definition)

Are small, benign but painful ulcers of the mouth and throat. They generally resolve on their own in 10-14 days. There are various over the counter remedies that ...Read more