7 doctors weighed in:
I get canker sores often. What is causing this?
7 doctors weighed in

1 doctor agrees
In brief: Contact dentist
The most likely factor may be stress or spicy foods.
See your dentist, if it is problematic, have the dentist use the laser to initiate faster healing.

In brief: Contact dentist
The most likely factor may be stress or spicy foods.
See your dentist, if it is problematic, have the dentist use the laser to initiate faster healing.
Dr. Debra Rosenblatt
Dr. Debra Rosenblatt
Thank
Dr. Paul Grin
Pain Management
1 doctor agrees
In brief: 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. Oral cancer appears as a growth or sore in the mouth that does not go away. If concerned see your dentist ASAP.

In brief: 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. Oral cancer appears as a growth or sore in the mouth that does not go away. If concerned see your dentist ASAP.
Dr. Paul Grin
Dr. Paul Grin
Thank
1 doctor agrees
In brief: No known cause
Canker sores or aphthous ulcers are triggered by many things but have no specific known cause like a virus or bacteria.
Stress, foods, trauma, hormonal fluctuations, and the like can set off an episode. They ulcers themselves appear to be caused by your own immune system's response to the triggers. Sodium Lauryl Sulfate is a toothpaste additive that is a known trigger. Try SLS free toothpaste.

In brief: No known cause
Canker sores or aphthous ulcers are triggered by many things but have no specific known cause like a virus or bacteria.
Stress, foods, trauma, hormonal fluctuations, and the like can set off an episode. They ulcers themselves appear to be caused by your own immune system's response to the triggers. Sodium Lauryl Sulfate is a toothpaste additive that is a known trigger. Try SLS free toothpaste.
Dr. Steven Pohlhaus
Dr. Steven Pohlhaus
Thank
Dr. Thomas Yash
Dentistry
In brief: 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.

In brief: 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.
Dr. Thomas Yash
Dr. Thomas Yash
Thank
Get help from a real doctor now
Dr. Christopher Crosby
Board Certified, Dermatology
12 years in practice
93K people helped
Continue
108,000 doctors available
Read more answers from doctors