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Cold sores are caused by the herpes simplex virus. No doubt you've heard of "herpes" before, but don't jump ahead of yourself. There are actually two types of herpes simplex virus, "type 1" and "type 2." Type 1 herpes simplex virus. Herpes simplex virus type 1 ("HSV1") generally only infects those body tissues that lie "above the waistline" and it is HSV1 that causes cold sores in the majority of cases. Type 2 herpes simplex virus. Herpes simplex virus type 2 ("HSV2") usually only infects those body tissues that lie "below the waistline" and it is this virus that is also known as "genital herpes." Herpes simplex virus type 2 is not usually the virus that causes cold sores, although it can.

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8y ago
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13y ago

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Q: Are cold sores cause by bacteria or virus?
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Related questions

Which bacteria is in cold sores?

There isn't any bacteria in cold sore, they are caused by a virus called oral herpes.


Can sunburn cause cold sores?

Getting a sun burn doesn't cause a cold sores but it can trigger break outs. The oral herpes virus is what causes cold sores.


What is the difference between a cold sore fever blister and herpes?

Canker sores an cold sores are not the same thing. Oral herpes is caused by a contagious virus. Cold sores can cause a lot of discomfort or pain and they affect the out side of the mouth. Canker sores are caused by bacteria and as far as I know they are not contagious. Canker sores are raise white slightly itchy masses that occuron the inside of the mouth.


Can it cause a sore?

Infection with the herpes virus causes cold sores.


What is the pathogen of cold sores?

Cold sores are not caused by organisms, they are caused by a virus called oral herpes.


How can you distinguish a cold sore from oral herpes?

Certain strains of the herpes virus cause cold sores. Herpes simplex virus type 1 usually causes cold sores.


Are cold sores a sign of AIDS?

Cold sores are caused by the herpes virus, not by the HIV virus.


What does lysine do to the herpes simplex virus?

Since the virus can cause cold sores, canker sores , and genital sores, L-lysine supplements increase the ratio of lysine to arginine in the body, curing the outbreak of the virus.


Can amoxicillin help a fever blister?

No, cold sores are caused by a virus (Herpes Simplex) and since amoxicillin is an antibiotic, it would have no affect on the virus. Antibiotics only work to kill bacteria, they are not effective against viral infections. There are anti-viral medicines that can be prescribed for and do help relieve cold sores. Ask your doctor if your cold sore could be treated with an anti-viral.


What kind of hepes virus is cold sores?

Cold sores are caused by the herpes simplex virus type 1.


What is herpes in cold sores?

Te herpes virus causes cold sores.


What causes cold sores chickenpox and other diseases?

Cold sores and chickenpox are caused by viruses. Other diseases can be cause by viruses as well but also bacteria.