Does pressing a cold sore with your fingernail stop it growing?

This is a bit weird but I’ve noticed I do this when I feel the tingle of a cold sore coming. I dig my fingernail into the tingly spot and kind of dare it to show its face. Could this possibly help in any way? Does anyone else do this and find it helps?

Vitamin B2 for cold sores

Noone likes having cold sores. They’re painful, unsightly and can spread easily. If you have the virus you’ll know all about trying to avoid getting them and fighting them when they come. Eating enough food containing Vitamin B2 can be one way of making sure you get less cold sores…