Cold sore - Symptoms and causes - Mayo Clinic
Jan 5, 2024 · Cold sores usually heal in 2 to 3 weeks without leaving a scar. Cold sores spread from person to person by close contact, such as kissing. They're usually caused by herpes …
6 Causes and Triggers of Cold Sores - Healthline
Nov 19, 2021 · Cold sores are caused by the herpes simplex virus (HSV-1). Once you’ve had a cold sore, it’s likely you will have more over the course of your life.
Why Do I Get Cold Sores? Common Triggers Explained
Nov 10, 2023 · Why do I get cold sores? Cold sores are the result of a herpes simplex virus (HSV) infection, the same virus that causes genital herpes.
Cold Sores: Causes, Symptoms, Treatment, Complications, and
Aug 11, 2025 · 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 …
Cold sores: Causes, symptoms, stages, treatment - Medical News …
Aug 26, 2025 · Cold sores, or fever blisters, are small lesions that usually appear around or inside the mouth. They are symptoms of oral herpes. Learn more here.
Cold sores: Who gets and causes - American Academy of …
Learn about who gets cold sores and what dermatologists understand about the causes.
Cold Sores: Types, Symptoms, Causes, Diagnosis, Treatment, and …
Oct 2, 2025 · Cold sores—also called fever blisters—are painful, fluid-filled sores that most commonly appear on the cheeks, lips, and tongue. An infection of the herpes simplex virus …
Cold Sores - University of Rochester Medical Center
What causes cold sores? Cold sores are caused by the herpes simplex virus. Once this virus is in you, it can cause outbreaks of cold sores. Cold sore outbreaks are often triggered by exposure …
4 Common Triggers of Cold Sores & Fast Treatment - Buoy Health
Nov 27, 2024 · Cold sores are painful blisters caused by HSV-1, often triggered by stress or illness. Learn symptoms, treatment options, and prevention tips.
Cold Sores: What They Are and How To Deal With Them
Feb 11, 2025 · Cold sores (or “fever blisters”) are caused by the very common, very contagious HSV-1 virus. You can get it from kissing, sharing drinks or even using the same lip balm as …