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.

    • Date Published: 01/12/2015

    Related Articles

    Search Articles

    Saltwater Drops in Nose Could Shorten Kids' Colds

    Can Zinc Really Shorten a Cold?

    Experimental Nasal Spray Might Ward Off Multiple Viruses

    How To Fight Common Wintertime Respiratory Viruses

    FDA Proposes Ban on a 'Useless' Decongestant, Phenylephrine

    How To Fight Common Wintertime Respiratory Viruses

    Severe Flu Season Raises Concerns About Brain Complications in Kids

    Could OTC Nasal Sprays Ease Colds & Flu and Cut Antibiotic Use?

    Flu and Stomach Bugs Are Spreading Fast—Are You Prepared?

    What You Need to Know About FluMist, the Nasal Flu Vaccine