Health Tip: What Causes a Cold Sore?

(HealthDay News) -- A cold sore is a painful sore that often forms on the lips or around the mouth. While a cold sore is caused by the herpes virus, many factors can act as triggers.

The American Academy of Dermatology says potential triggers include:

  • Feeling run down, stressed or tired.
  • Having the flu, a fever or a cold.
  • Being exposed to the sun.
  • Having hormonal changes as a result of pregnancy or menstruation.
  • Having an injury or trauma to the face from a cut, dental work, shaving or surgery.

    • Related Articles

    Juul Halts Sale of Fruit, Dessert Flavors of E-Cigarettes

    Continue

    Close to 1,300 Cases of Vaping-Linked Illness Now Identified

    Continue

    Sinus Infections: What You Need to Know

    Continue

    Search Allergy Articles

    Many Kids With Chronic Illness Are Still Happy: Study

    Nearly 1 in 12 U.S. Kids Has a Food Allergy

    A Good Spring Clean Can Help Tame Seasonal Allergies

    Persistent Cough May Mean See Your Doctor

    Spring Is the Sneezing Season

    Asthma Myths That Can Hurt You

    For Kids With Asthma, Depression Makes ER Visit More Likely

    Asthma Inhalers Incorrectly Used by Most Kids in Study

    Dirty Air Kills 30,000 Americans Each Year

    Cleaner Air Linked to Lower Asthma Rates in Kids

    Vaping Habit Might Make You More Prone to Flu

    Don't Become a Flu Statistic. Get Vaccinated

    FDA Gives OK to First New Flu Drug in 20 Years

    Roll Up Your Sleeves to Avoid the Flu

    Flu Shot Much More Effective This Year, CDC Says