When it comes to oral health, any lump, bump, or irregularity in your mouth can be a concerning situation.
One of the most common questions people have surrounds mouth ulcers. These small, painful sores can appear on the inside of your mouth, causing discomfort and worry.
But are mouth ulcers contagious? The answer is straightforward — but only if you can correctly diagnose a mouth ulcer compared to other similar lesions that occur in the mouth.
Quick Answer: Are Mouth Ulcers Contagious?
No, mouth ulcers (canker sores) are not contagious. You cannot catch or spread them through person-to-person contact.
The topic gets confusing because mouth ulcers are not the same as cold sores, which are caused by the herpes simplex virus and are contagious.
Mouth ulcers (canker sores) are often caused by factors like stress, tissue injury, certain foods, or hormonal changes, and not by a contagious virus or bacteria.
Good oral hygiene, avoiding irritating foods, and stress management can help prevent mouth ulcers. If you have a painful or persistent ulcer, over-the-counter treatments can ease symptoms, but see a healthcare professional if it doesn't heal in three weeks or if you frequently get ulcers.
Understanding Mouth Ulcers
Mouth ulcers, also known as canker sores, are small, shallow lesions that develop on the soft tissues in your mouth or at the base of your gums. They can make eating and talking uncomfortable.
There are three types of mouth ulcers: minor, major, and herpetiform ulcers.
Minor ulcers are small and oval shaped, and they usually heal within one to two weeks without scarring. These are, by far, the most common form.
Major ulcers are larger and deeper, with irregular edges, and they can take several weeks to heal and may leave a scar.
Herpetiform ulcers are a cluster of several small sores, and they heal without scarring within one to two weeks.
Causes of Mouth Ulcers
Mouth ulcers are not well understood, but several factors can trigger them. These include stress or tissue injury, certain foods, hormonal changes, certain diseases or conditions, and certain toothpastes and mouth rinses.
It's also worth noting that mouth ulcers are not the same as cold sores, which are caused by the herpes simplex virus and are contagious.
Are Mouth Ulcers Contagious?
The short answer is no, mouth ulcers are not contagious.
You cannot catch a mouth ulcer from someone else, and you cannot pass one on to another person.
This is because mouth ulcers are not caused by a virus or bacteria that can be spread from person to person.
However, it's important to note that while mouth ulcers themselves are not contagious, some of the conditions that can cause mouth ulcers can be contagious.
For example, if a person has a mouth ulcer as a result of a viral infection, the virus itself can be spread to others.
Likewise, confusing a mouth ulcer (“canker sore”) with a cold sore will change things. Cold sores (which are often mistaken for canker sores) are highly contagious.
Preventing Mouth Ulcers
While you can't catch a mouth ulcer from someone else, there are steps you can take to reduce your risk of developing one. These include maintaining good oral hygiene, avoiding foods that irritate your mouth, and managing stress.
Good oral hygiene involves brushing your teeth at least twice a day, flossing daily, and visiting your dentist regularly.
Avoiding foods that irritate your mouth, such as spicy foods, acidic fruits, and hot drinks.
Managing stress can involve techniques such as meditation, exercise, and getting enough sleep.
Treatment for Mouth Ulcers
Most mouth ulcers don't require treatment, as they usually heal on their own within one to two weeks. However, if you have a particularly painful ulcer, or if your ulcer hasn't healed after three weeks, you should see a healthcare professional.
There are also over-the-counter treatments available that can help to reduce pain and inflammation. These include mouth rinses, ointments, and gels. It's important to follow the instructions on the packaging and to not use these treatments for longer than recommended.
When to See a Doctor
If your mouth ulcer hasn't healed after three weeks, if it's unusually large, if it's spreading, or if it's causing you severe pain or high fever, you should see a doctor. You should also seek medical attention if you're getting mouth ulcers frequently.
Final Thoughts
While mouth ulcers can cause discomfort and concern, they are not contagious. However, maintaining good oral hygiene and a healthy lifestyle can help to prevent them, and there are treatments available to manage the symptoms.
FAQs
Can mouth ulcers spread from person to person?
No, mouth ulcers, also known as canker sores, are not contagious and cannot spread from person to person. They are not normally caused by a virus or bacteria that can be transmitted.
Can mouth ulcers spread?
Mouth ulcers themselves do not spread. However, mouth ulcers (“canker sores”) are sometimes mistaken for cold sores, which are highly contagious.
Can you pass mouth ulcers by kissing?
No, you cannot pass mouth ulcers to someone else by kissing. Mouth ulcers are not contagious and are not caused by conditions that can be transmitted through saliva during kissing. However, cold sores, which are sometimes mistaken for mouth ulcers, can be spread by kissing.
Can you give someone a mouth ulcer if you have one?
No, you cannot give someone a mouth ulcer if you have one. Mouth ulcers are individual reactions and are not transmissible to other people, regardless of close contact or shared items.
* Though the author of this post is a licensed dentist in the state of Kansas, this information is provided for informational and educational purposes only. Please use your best judgment and contact emergency medical services in the event of an emergency.