A cold-sore is apparently caused by the 'Herpes Simplex' virus(HSV1), which remains in the system and is highly contagious via saliva during kissing or actually making contact with the erupted sore!
It can be sparked through stress, hormones or a sudden change in body temperature.
As viruses thrive in heat, the best treatment I have found is the application of ice to the affected area, as soon a tingle is felt.
If the sore has erupted, dose orally with Lysine Powder and apply Manuka Honey to the sore( both available from local health-shops ).
Bactroban is not effective for viral cold sores.
Cold sores are caused by a virus, and polysporin is not active against viruses, so it won't work for cold sores.
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 (herpes virus) are from the Varicella Virus which also causes Chickenpox and Shingles so yes.
You don't get cold sores from the wind.
Cold sores are very contagious.
Cold sores aren't airborne.
Kissing can pass cold sores which are contagious. But cold sores are more likely to be passed when the person you're kissing has any signs of a cold sore. So if you or your partner has a cold sore then avoid kissing on the mouth until the cold sore is completely gone.
Probably not the best thing to use on cold sores around the mouth. It's more used to treat bacterial infections, and cold sores are caused by a virus. It may help heal the sores but you may not want to use it on your mouth as it could be toxic. Just get some over the counter cold sore cream to help heal te sores.
They do have cold sores in South America.
You can get cold sores from hsv-2.