What condition most commonly causes cold sores?

The condition that most commonly causes cold sores is linked to the herpes simplex virus 1. This virus is primarily responsible for oral herpes, which manifests as cold sores or fever blisters around the lips and mouth. Herpes simplex virus 1 is highly contagious and is typically transmitted through close contact, such as kissing or sharing utensils.

In contrast, herpes simplex virus 2 is more commonly associated with genital herpes and is less frequently responsible for cold sores. Human papillomavirus is primarily linked to warts and certain cancers, while varicella zoster virus is responsible for chickenpox and shingles, neither of which are associated with cold sores. Understanding the different viruses and their associated conditions is crucial for proper diagnosis and treatment in skincare and facial therapies.