Cold sores are a symptom of oral herpes, which is caused by the herpes simplex virus. Angular cheilitis is less common and has several different causes. Each condition is treated differently.

Cold sores are common, and they can sometimes appear under the nose. Learn about the symptoms, causes, treatment, and prevention of cold sores under the nose.

"Love Island" contestant Nic Vansteenberghe is being criticized for having a cold sore on the show. But he doesn't deserve the shame. Here's what to know.

EXCLUSIVE: Many fans have been speculating that certain contestants have cold sores. The Mirror US spoke with medical experts ...

A mouth ulcer is a painful and typically small lesion that develops in the mouth. Discover causes, how it compares to a cold sore, prevention tips, and more.

Cold sores are small blisters that usually appear around the mouth. Find out how long they last, the stages of healing, and treatments that may help.

Understanding the differences between colds, flu, and RSV can help in identifying the illness you're dealing with, the ...

Question: My teenage daughter has a sore on the side of her lip. She is prone to cold sores but she says this feels entirely different. She does sleep on that side of her face at night and I ...

Mouth sores and gum problems can flare along with other Crohn’s disease symptoms. Learn how to manage these complications and why they happen.

The symptoms of a cold sore include a tingling or burning sensation on the lips or around the mouth, followed by the appearance of small, fluid-filled blisters.

A new COVID variant called NB.1.8.1, aka Nimbus, is spreading in the U.S. and causing an incredibly painful sore throat, ...