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Chew on This: How much do you know about mouth ulcers?
by Staff
It's sore, white and growing on the inside of your cheek. Do you know which mouth sores are contagious and which aren't, and if you're at risk? Find out in our mouth ulcer quiz!

What causes mouth ulcers?

  • infection
  • injury
  • both of the above

Which of the following conditions is not known to cause mouth sores?

  • leukoplakia
  • gingivitis
  • histoplasmosis
  • oral lichen planus

True or false: Canker sores are mouth ulcers.

  • true
  • false

How many people get canker sores?

  • fewer than 5 percent
  • about 20 percent
  • 50 to 75 percent
  • just about everyone

Name the three types of canker sores:

  • minor, major and herpetiform
  • peptic, aphthae and herpetiform
  • minor, aphthae and herpetiform

Which is the most common type of canker sore?

  • minor sores
  • major sores
  • herpetiform ulcers

How big is a minor canker sore?

  • smaller than 1 millimeter
  • usually less than 5 millimeters
  • larger than 10 millimeters

Which inflammatory disease is not associated with mouth sores?

  • Stevens-Johnson syndrome
  • polymyalgia rheumatica
  • Crohn's disease
  • systemic lupus erythematosus

True or false: If left untreated, mouth ulcers will develop into oral cancer.

  • true
  • false

What do mouth sores look like?

  • a flat white lesion
  • a small white or yellow sore ringed with red
  • a fluid-filled red sore
  • all of the above

How long does it take a minor canker sore to heal?

  • about one to three days
  • about seven to 10 days
  • about one month

What type of mouth sore prompted Emperor Tiberius to ban kissing during public ceremonies in ancient Rome?

  • leukoplakia
  • herpangina
  • cold sores (fever blisters)

How many Americans have had a cold sore at least once?

  • fewer than 10 percent
  • 20 to 40 percent
  • 45 to 80 percent

In addition to cold sores, which of the following types of mouth ulcers are contagious?

  • canker sores
  • herpangina
  • histoplasmosis

What causes canker sores?

  • emotional stress
  • a food allergy
  • a vitamin deficiency
  • all of the above

Where are canker sores usually found?

  • on the outside of the mouth, on and around the lips and chin
  • on the inside of the cheeks, the inner part of the lips and on the tongue
  • on the back of the tongue and in the throat

What is the most common treatment for mouth ulcers?

  • anitibiotics
  • topical medications such as pain relievers and corticosteroids
  • a liquids-only diet

Both candidiasis and leukoplakia cause white patches to form in the mouth. Which one is caused by mouth irritation?

  • candidiasis
  • leukoplakia

A deficiency in which vitamins and minerals may be associated with mouth ulcers?

  • vitamin C, folic acid and iron
  • vitamin B12, folic acid, iron and zinc
  • vitamin E, vitamin D and iron

Which common over-the-counter product is also a good remedy for relieving the pain of mouth ulcers?

  • liquid antacid
  • fluoride rinse
  • mouthwash