Cold sores are painful blisters caused by an infection with the herpes simplex virus (HSV). Learn more about the causes, risk factors, symptoms, treatment, complications, and prevention of cold sores.

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.

Cold sores, or fever blisters, are caused by a virus and have no cure. When you feel one budding, you want to get rid of it, fast. But you probably don’t need a doctor.

Medically reviewed by William Truswell, MD Cold sores and pimples are two common skin conditions that primarily affect the face. Cold sores (herpes labialis) are caused by the herpes simplex virus ...

However, if the immune system is weakened, cold sores are more likely to occur. It is estimated that 5-10 out of every 100 individuals with cold sores experience outbreaks more than five times a year.

Cold sores stem from the herpes simplex virus type 1 (HSV-1), which is highly contagious and remains dormant in nerve cells until triggered.

While individual cold sore episodes will heal, there’s no way to banish the virus from your body, so you’ll always be at risk for future outbreaks, Dr. Wassef said. “HSV-1 is a chronic ...

Cold sores, or fever blisters, are precisely herpes simplex virus type 1 (HSV-1) that appear as fluid-filled blisters around the lips that can also develop on the chin, cheeks or inside the nostrils.

Cold sores may be linked to Alzheimer's risk, a study in BMJ Open finds. HSV-1 infection may dementia risk, but anti-herpetic treatment could offer protection.