What Causes Fever Blister

They are also called fever blisters. They are caused by the herpes simplex virus. The most common strain of the virus causing cold sores is herpes simplex virus 1. It can be spread by kissing or sharing eating utensils or even sharing towels.

What can trigger a fever blister?

They are also called fever blisters. They are caused by the herpes simplex virus. The most common strain of the virus causing cold sores is herpes simplex virus 1. It can be spread by kissing or sharing eating utensils or even sharing towels.

Does stress cause cold sores?

If you’re wondering if stress causes cold sores, the answer appears to be yes. When we’re under mental stress, our immune systems suffer. This gives your dormant cold sore virus a chance to replicate itself and cause havoc in the form of blisters.