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A member asked:

Can a cold sore appear in the mouth?

2 doctor answers2 doctors weighed in
Dr. Scott Katz
Pediatrics 26 years experience
Yes: The mouth and lips are the most common area for young children to develop cold sores.
Dr. James Ferguson
Pediatrics 46 years experience
Yes: The membranes inside the mouth are usually involved with the first or primary flare of a cold sore and can be quite extensive. Later cold sores generally localize on the skin outside. Other viruses (hand-foot-mouth), trauma, apthous ulcers, allergic reaactions can all cause mouth sores on the inside.

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Similar questions

A 57-year-old member asked:

How does one treat a cold sore in the mouth?

2 doctor answers5 doctors weighed in
Dr. Alan Patterson
Obstetrics and Gynecology 42 years experience
If it is caused by: Herpes you should take oral valtrex, (valacyclovir) that is the quickest way to get rid of it. Your doctor can prescribe that for you.
A 49-year-old member asked:

What causes cold sore in corner of mouth?

2 doctor answers8 doctors weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
If it is an actual : Cold sore it would be caused by herpes simplex type i virus.
Dr. Armando Berguido
Dentistry 34 years experience
If your sore is truly at he corner of the mouth it could be Angular Chelitis and not a Cold Sore. Angular Chelitis has various causes the most common being Candida Albicans.
Nov 27, 2020
A 42-year-old member asked:

What could I do to find out if it's a pimple by mouth or a cold sore?

1 doctor answer1 doctor weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Pimple vs cold sore: Cold sores are painful liquid filled blisters that can occur on the lips, roof of the mouth or the gums which are caused by the herpes simplex virus (hsv-1). Tingling &/or pain can herald the oncoming of cold sore 1 to 2 days prior to eruption. A pimple does not normally form a blister.
A 37-year-old member asked:

I have a cold sore in the crease of my mouth, what to do?

1 doctor answer4 doctors weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Cold Sore: Your doctor can prescribe valtrex (valacyclovir). Melissa officinalis or lemon balm (cream) has been shown in european studies to help expedite healing of cold sores. It can reduce healing time by half. Studies also show that regular use can help v recurrences. Brief supplementation w lysine 1, 000mg orally 3x a day at the onset, can also hasten healing. Your dermatologist can also provide laser treatments.
A 38-year-old member asked:

What causes rid of a cold sore on the corner of your mouth?

1 doctor answer1 doctor weighed in
Dr. Heidi Fowler
Psychiatry 25 years experience
Try this: Melissa officinalis or lemon balm (cream) has been shown in european studies to help expedite healing of cold sores. It can reduce healing time by half. Studies also show that regular use can help v recurrences.

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Last updated Sep 28, 2016

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