8 doctors weighed in:
Is it true that cold sores are contagious?
8 doctors weighed in

3 doctors agree
In brief: Yes, very
Cold sores, are caused by the herpes virus, and appear initially as small clear bubbles on the lip, roof of the mouth, or the gum near the teeth.
These vesicles rupture and leave small, painful ulcers. These are very catagious and you can spread them to other parts of your body. So don't touch the sore with your finger! use a cotton-tipped swab to touch it, if you must, and throw it away!

In brief: Yes, very
Cold sores, are caused by the herpes virus, and appear initially as small clear bubbles on the lip, roof of the mouth, or the gum near the teeth.
These vesicles rupture and leave small, painful ulcers. These are very catagious and you can spread them to other parts of your body. So don't touch the sore with your finger! use a cotton-tipped swab to touch it, if you must, and throw it away!
Dr. Jennifer Holtzman
Dr. Jennifer Holtzman
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Dr. Robert Kwok
Pediatrics
2 doctors agree
In brief: Yes, from a virus
Cold sores on the lips or near the lips, are usually caused by recurrent oral herpes virus.
They start as a slightly raised reddish area, then form a cluster of tiny blisters, which break open soon, leaving a sore (ulcer) to heal up over a week. Sores appear more often when one is under stress or is ill from another illness. Younger babies with herpes should see a doctor when a sore appears.

In brief: Yes, from a virus
Cold sores on the lips or near the lips, are usually caused by recurrent oral herpes virus.
They start as a slightly raised reddish area, then form a cluster of tiny blisters, which break open soon, leaving a sore (ulcer) to heal up over a week. Sores appear more often when one is under stress or is ill from another illness. Younger babies with herpes should see a doctor when a sore appears.
Dr. Robert Kwok
Dr. Robert Kwok
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Dr. Robert Brodsky
Dentistry
In brief: Yes
The virus can be spread.

In brief: Yes
The virus can be spread.
Dr. Robert Brodsky
Dr. Robert Brodsky
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