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Doctor insights on: What Does A Canker Sore Feel Like

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What does a canker sore look like?

What does a canker sore look like?

Aphthous ulcers: They are usually round ulcers with a grayish-white colored surface surrounded by a red inflamed circle. ...Read more

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Dr. Sandra Eleczko
498 doctors shared insights

Aphthous Stomatitis (Definition)

Aphthous stomatitis is also known as Canker sore. 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


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Hello!i am having a canker sore in the inner right cheek.It's pretty high, very near the teeth.When i touched it, it feels like a ganglion. What to do?

Hello!i am having a canker sore in the inner right cheek.It's pretty high, very near the teeth.When i touched it, it feels like a ganglion. What to do?

Is it painful?: How long have you had it? I recommend l-lysine (see image) ointment and to stay away from anything acidic (tomato sauce, citrus, etc) which can make the pain worse. Also, to prevent from biting it in your sleep, ointment + gauze and cover it at night. If it is not gone within a week please see a dentist to make sure this is what it is! ...Read more

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Why would my gum bleed or feel like I have a canker sore right after eating acidic fruit?

Why would my gum bleed or feel like I have a canker sore right after eating acidic fruit?

Periodontal disease: Your gums may be sensitive to the fruit acids especially if you have periodontitis, the disease that affects the tissues surrounding the tooth. ...Read more

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Canker sore! i need to know if I have mouth cancer I have had a canker sorefor like 4 days now. It doesn't really hurt unless i feel lit with my tongue. I feel like its gotten a lot better because it did feel like it was an open sore when i felt it with m

Canker sore! i need to know if I have mouth cancer I have had a canker sorefor like 4 days now. It doesn't really hurt unless i feel lit with my tongue. I feel like its gotten a lot better because it did feel like it was an open sore when i felt it with m

Unlikely: The lesion could be a canker sore or from trauma. Without a history (age/smoking/tobacco/alcohol use?) and exam +/- biopsy, it is difficult to say for sure, but few docs would worried about a lesion that has been there only 4 days. If the lesion persists more than a couple weeks definitely see your dentist/pmd/ent/oral surgeon. If you are using tobacco and quit now you may avoid effects. ...Read more

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Can cold sores appear white in colour?Like a whitehead?No tingle, no blister. Feels like canker sore or bitten lip. Not sure how to tell...

White is Good: When a canker sore or "aphthous ulcer" is in the process of healing it turns a whitish color. You are on the mend. Leave it alone, don't pop it! maybe some salt water or baking soda gargles...If you want to feel better but actually, nothing is shown to significantly speed up healing once it gets to this stage. You're in the home stretch....1-2 weeks more and you'll be able to suck lemons again. ...Read more

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Dr. Daniel Rubenstein
575 doctors shared insights

Canker Sore (Definition)

Canker sores (aphthous ulcers) are small, light-colored, painful sores ...Read more