The primary culprit behind fever blisters is the herpes simplex virus, specifically HSV-1. This highly contagious virus is easily transmitted through close personal contact, such as kissing or sharing ...

Fever blisters — also known as cold sores — are not only painful and uncomfortable but can also affect your self-esteem. If you’ve had one, you know how frustrating it is to deal with them and the ...

First, you’re not alone. Up to 80% of American adults have the herpes simplex virus (HSV-1), which can cause cold sores (also known as fever blisters), according to Johns Hopkins. The viral infection ...

Viral skin rashes (also known as viral exanthems) can cause itching, irritation, and pain — and possibly symptoms like fever or fatigue. Unlike allergic rashes, which happen when your immune system ...