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A 40-year-old male asked:

why canker sores grow in size?

3 doctor answers8 doctors weighed in
Dr. Sandra Eleczko
Dentistry 36 years experience
Get it checked: Canker sore typically heal in about 10-14 days and once they form they do not keep growing. If the sore in your mouth is growing, please se a dentist and have it checked. It may be ore than just a canker sore.
Dr. Joel Doyon
Cosmetic Dentistry 36 years experience
Normal: Canker sores are a result of the body not recognizing parts of the mouth as foreign and attack it, until it then realizes that it's not foreign. After that, the canker sore starts to heal.
Dr. Gary Sandler
Dentistry 54 years experience
Canker sores: Vary in size, frequency ; location and we really don't know why. Local irritation may play a role. They start off small when you are probably not even aware of them ; grow in size until your body's defense mechanisms start to heal them.Make sure what you have is actually a canker sore (aphthous ulcer) if it lasts more than two weeks or seems unusual in any way if you are accustomed to getting them.

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Similar questions

A 18-year-old member asked:

How do you treat canker sores?

4 doctor answers11 doctors weighed in
Dr. James Eitner
Family Medicine 34 years experience
Salt water swish: Early on, you can try a salt water or hydrogen peroxide swish and spit. If the symptoms persist past a few days or recur frequently, see your dentist or doctor for an antimicrobial mouthwash, cortisone medication, or other solution.
NY
A 25-year-old member asked:

I get canker sores often. What is causing this?

4 doctor answers7 doctors weighed in
Dr. Thomas Yash
Dentistry 46 years experience
You are susceptable: Basically, once you get canker sores, you will occassionaly get them again. This autoimmune lesion is set off by various triggers, stress, or trama. Some triggers could be foods(peanuts, spicy food), drinks (red wine), or a cold. It varies with the individual.
Canada
A 19-year-old female asked:

Why do I get reoccuring canker sores?

3 doctor answers12 doctors weighed in
Dr. Jack Mutnick
Allergy and Immunology 17 years experience
Canker Sores: Canker sores are due to herpes simplex virus type 1. It is very very common. A ton of things can cause recurrent outbreaks. You can buy over-the-counter treatment or see your primary doctor who can prescribe as needed tablets for outbreaks or might opt to put you on daily suppressive therapy. Hsv-1 is painful and unsightly, but don't worry because stress only makes them happen more often.
Dr. Michael P Vaughn
Allergy and Immunology 34 years experience
The term "cancer sore" can also refer to apthous ulcers that occur on the wet mucous membranes inside the mouth. These are not thought to be due to herpes virus and they will not typically improve on herpes medications. Daily suppressive therapy with these medications (acyclovir/ famcyclovir etc.) will not usually be effective.
Feb 23, 2012
A 40-year-old member asked:

Are there meds and or oral rinse for canker sores?

4 doctor answers12 doctors weighed in
Dr. Jack Mutnick
Allergy and Immunology 17 years experience
Yes: Canker sores can be caused by many things. There is something prescribed called "magic mouthwash" which you could ask your doctor or dentist to prescribe. Also avoid acidic or spicy foods, chewing gum, etc.
IL
A 18-year-old female asked:

I get canker sores after eating chocolate. Is it possible that I am allergic to chocolate?

4 doctor answers6 doctors weighed in
Dr. David Miller
Dr. David Milleranswered
Family Medicine 10 years experience
Not likely: Food allergies tend to present like other allergies, with hives and anaphylaxis, not canker sores, which most frequently are caused by physical trauma (toothbrush, self bite, hard/sharp foods). There may also be a link to citrus fruits &/or vitamin deficiencies.

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Last updated Feb 8, 2020

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