5 doctors weighed in:

Are canker sores contagious or a form of herpes?

5 doctors weighed in
Dr. Scott Bobbitt
Dentistry
3 doctors agree

In brief: No and no

Canker sores are an auto-immune inflammatory reaction to some types of trauma: physical, emotional, pharmaceutical and/or illness.
They are self-limiting, need no medication and not contagious. In cases where the size, number or duration of the canker sores are not tolerable, you can take anti-inflammatory meds (nsaids) or ask your dentist for a chemical cautery or laser treatment for comfort.

In brief: No and no

Canker sores are an auto-immune inflammatory reaction to some types of trauma: physical, emotional, pharmaceutical and/or illness.
They are self-limiting, need no medication and not contagious. In cases where the size, number or duration of the canker sores are not tolerable, you can take anti-inflammatory meds (nsaids) or ask your dentist for a chemical cautery or laser treatment for comfort.
Thank
Dr. Gary Sandler
Dentistry
2 doctors agree

In brief: No, no

The cause of canker sores is not well understood.
I find they occur in cases where there is the combination of stress and irritation to the tissues. Some believe it is a form of autoimmune involvement. Regardless, it is not caused by bacteria, virus, etc which are contagious organisms. It is not related to herpes in any way. If you have lesions, get them diagnosed by a dentist just to be sure.

In brief: No, no

The cause of canker sores is not well understood.
I find they occur in cases where there is the combination of stress and irritation to the tissues. Some believe it is a form of autoimmune involvement. Regardless, it is not caused by bacteria, virus, etc which are contagious organisms. It is not related to herpes in any way. If you have lesions, get them diagnosed by a dentist just to be sure.
Thank
Get help from a real doctor now
Dr. Christopher Crosby
Board Certified, Dermatology
15 years in practice
107K people helped
Continue
100,000 doctors available