Fever blisters, also known as cold sores, are a common annoyance caused by the herpes simplex virus (HSV-1). These clusters of small, fluid-filled blisters typically appear on the lips or around the ...

What Is a Cold Sore? A cold sore is a group of tiny, painful blisters caused by the herpes simplex virus (HSV). They're also called fever blisters or herpes simplex labialis. Up to 90% of people ...

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 ...

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 ...

Waking up with a spot on your lip is never a good feeling. Often cold sores or pimples are to blame, though telling the difference isn't always easy. They can look similar on the surface, but their ...

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 ...

Hand, foot, and mouth disease is a common viral illness that causes, symptoms like fever, rash, and mouth sores. Though HFMD occurs most often in children, adults can get it, too, and may have ...

Summer is all fun and games until you're stuck with aching, puffy lips that feel like they've been roasted. Sunburn blisters on lips are more common than we think, especially if we leave our SPF ...