They are caused by the herpes simplex 1 virus. We get them by being infected by someone else who is sheding the virus - probably being kissed by someone when you were very small. Once infected with the virus you may have periodic outbreaks or the virus may remain dormant. No one really knows what causes the virus to migrate and reproduce but is has been linked to stress, infections, menstruation, hormone changes and certain foods. Generally the advice not to pick at your cold sore is good, if you get virus particles on your fingers you can spread them to other warm moist parts of your body and cause more infections there, or you could pass them on the other people. It is also a good idea to dry your face with paper towle when the cold sore is active. That way the virus particles can be disposed off and won't come in contact with your eyes.
Bactroban is not effective for viral cold sores.
Cold sores aren't airborne.
You don't get cold sores from the wind.
Cold sores are very contagious.
Cold sores are caused by a virus, and polysporin is not active against viruses, so it won't work for cold sores.
They do have cold sores in South America.
Cold sores aren't bad but they can be painful.
Cold sores look like a blister.
You can get cold sores from hsv-2.
Biaxin is an antibacterial agent, and cold sores are viral, so it is not effective for treating cold sores.
Nystatin is an antibacterial agent, and cold sores are viral, so it is not effective for treating cold sores.
Cold sores are not caused by organisms, they are caused by a virus called oral herpes.