According to “” there are many names for Cold Sores. They mention the following:

The most common name is “Cold Sore” but you will hear “Oral Herpes” and “Herpes Simplex” mentioned a lot. Cold sore sounds a little less intrusive compared to “Oral Herpes” – but GP’s have fought for years to get the virus taken seriously.

The Medical names you will see are :

Herpes virus Type1 (HSV-1) – most common cause

Herpes virus Type 2 (HSV-2) less common