The first question people ask is ‘Are cold sores contagious?’ The answer is yes. HSV-1 is as easy to spread as it is tough to fight.
The cold sore virus can be spread through skin-to-skin contact. It sneaks into your body through the mucous membrane in your mouth or damaged skin. It then remains dormant inside a group of nerve cells located at about the level of your temple until a cold sore trigger awakens it.