HealthTap Online Primary Care Doctors Accepting New Patients
Book a video visit
HealthTap
Telehealth
A member asked:

If you have a canker sore in your mouth and you give someone oral is it contagious to them?

4 doctors weighed in across 2 answers
Dr. John Chiu answered

Unlikely: I have never heard of a canker sore being transmitted from one person to another.

Dr Golenbock agreed

Answered 8/18/2013

4.9k views

Thank

Don't do it: Yes yes yes!, viral and bacterial sores in your mouth are very contagious so take a break from any oral contact with others.

Dr Ali agreed

Answered 8/23/2013

4.9k views

Thank

Related Questions

A member asked:

Canker sore at bottom of lower gum. 3 days, getting painful. Good oral hygiene & been rinsing mouth after eating and drinking. What else to do? Hurts!

A doctor has provided 1 answer

A member asked:

Hi, So after I had my baby I was getting canker sore in my mouth which would be in the back of my tongue which would go away but I have bumps on the back of my tongue after oral sex that still havent went away no bumps appear on my lips ?

2 doctors weighed in across 2 answers

A member asked:

I have 2 sores in my mouth. 1 small bright red sore on soft palate by my teeth and 1 underneath the tip of tongue small red border white center. Can u have canker sores and oral herpes @the same time?

6 doctors weighed in across 3 answers

A member asked:

Can mouth canker sore cause severe ear pain? I went to ent and have no fluid in ear or anything visible! Oral cancer?

3 doctors weighed in across 2 answers

A member asked:

Diagnosed with HPV and have a canker sore on the front of my mouth. Its not in the Back of throat like things say, should I be worried for oral cancer?

2 doctors weighed in across 2 answers

Sponsored Content
HealthTap Medical Group does not endorse products or services. Sponsored content revenues support our mission to make health information free and accessible to all.Learn more

People also searched for:

Iv known canker sores as sores in ur mouth from biting cheeks and 2 much citrus stuff. Now my dental hygienist says they r a contagious sore. CONFUSED?
Can u get canker sores or any type of mouth sore from giving oral sex to a person with NO STDS?
Should I refrain from giving oral sex if I have a canker sore in my mouth?
I got a canker sore because I bit myself. Is it still bad to give oral sex since I got the canker sore when I accidentally bit my lip while eating?
Well here goes.... so about a month and a half ago i gave oral sex with a canker sore in my mouth to a man i didn't know.... he said hes clean of hiv?

Telemedicine

Primary Care
Manage Your Conditions
Women's Health
Children's Health
Men's Health
Senior Health
Wellness, Prevention & Lifestyle
Sexual Health
Mental & Behavioral Health
Travel Medicine
Urgent Care
Ask your question
Didn't find what you're looking for?

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.

Ask your question

More of what we treat

Allergies
Antibiotics
Asthma
High Blood Pressure
Prescriptions
Type 2 Diabetes
Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.
HealthTap
HIPAA logo
HIPAASecure
Soc 2 Type 2 logo
SOC 2 Type 2Certified
JCAHO Accredited
JCAHOAccredited
Member App

Download HealthTap

Video visit and message your doctor

Member App QR Code
Play Store Member LinkApp Store Member Link

Questions?

+1 (888) 828-0841support@healthtap.com
LinkedInTwitter
HomeTermsPrivacyCookiesDMCAHealth TopicsDoctors DirectoryDoctor Q&A by Specialty
Copyright 2026 HealthTap, Inc.