(HealthDay News) -- Swollen gums are relatively common, but can signal an underlying health problem.

The U.S. National Library of Medicine offers this list of possible causes:

  • Having an inflamed gum condition called gingivitis.
  • Having a fungal or viral infection.
  • Being malnourished.
  • Wearing dentures that don't fit properly.
  • Being pregnant.
  • Being sensitive to a mouthwash or toothpaste.
  • Having scurvy.
  • Experiencing a side effect of certain medications.