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A 48-year-old member asked:

how do you get cold sores inside your mouth? what is the cause?

1 doctor answer3 doctors weighed in
Dr. Jeffrey Fromowitz
Dermatology 19 years experience
HSV: Hsv causes cold sores which are usually outside of the oral cavity. Perhaps you are referring to a canker sore.

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A 25-year-old member asked:

Can you get cold sores from giving mouth to mouth to someone who has cold sores?

2 doctor answers5 doctors weighed in
Dr. Robert Keller
Emergency Medicine 40 years experience
Yes: Herpes virus is usually shed when a visible sore is present; however, the virus can be present even without a sore showing. You usually need to have a portal of entry for the virus to infect you (cut, dry lips, etc). But is you have been exposed before and have anti bodies against the herpes virus you have be able to fight it off. Wearing lip stick, lip gloss or chapstick will help protect you.
Dr. Robert Keller
Emergency Medicine 40 years experience
Provided original answer
Good tips from Dr. Opsimos
Dec 30, 2011
A 33-year-old member asked:

Can you get symptoms of cold sores inside the mouth instead of outside?

2 doctor answers10 doctors weighed in
Dr. Nela Cordero
Pediatrics 54 years experience
YES: Cold sores are painful lesions inside the mouth caused by viral infections.
A 45-year-old member asked:

Is this cracking at the corners of my mouth a symptom of cold sores?

2 doctor answers3 doctors weighed in
Dr. Alan Levine
Pediatrics 34 years experience
Probably not: Cold sores--or herpes simplex reactivation--usually will present as an area at the lip red border or just beyond, that initially may sting or burn and then goes on to develop a cluster of tiny blisters. These may coalesce into one or more larger blisters and finally open. Cracking at the corners of the mouth is often from licking due to dryness (ie allergies).
A 32-year-old member asked:

What causes cold sores in the corner of my mouth?

4 doctor answers7 doctors weighed in
Dr. LUIS IRIZARRY
A Verified Doctor answered
A US doctor answered Learn more
Herpes virus: Can cause fever blisters. Cold sore at the corner of mouth could be due to dry air, .
A 39-year-old member asked:

What usually causes cold sores in the mouth?

1 doctor answer1 doctor weighed in
Dr. Harry Ringer
Dentistry 25 years experience
Cold sores: Most cold sores are called aphthous ulcers. They are caused by a virus that the majority of the population has. There is no cure, it usually lays dormant in the nerve endings and erupts in an incident after stress, trauma or external stimulants. They usually last 7-10 days and there are meds that can lessen the duration and intensity. Herpes is another possibility. See a dentist to have evaluated.

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Last updated Aug 26, 2013

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