Question: are some cold sores not herpes?
Answer: Causes and Symptoms of Fever Blisters and Cold Sores Now, before you get fixated on the word "herpes," you need to know that oral herpes (HSV-1) is not the same as genital herpes (HSV-2). While both are contagious, your cold sores and fever blisters will usually show themselves in or around the mouth.