(HealthDay News) -- Measles is a very contagious viral illness that can lead to serious complications, including inflammation of the brain (encephalitis), and respiratory or ear infections.

Thanks to widespread vaccination, measles cases have dropped to a sparse few in the United States and Canada, the U.S. National Library of Medicine says.

Nonetheless, the NLM mentions these potential symptoms of measles:

  • Spotty rash that commonly starts three-to-five days after other symptoms emerge.
  • Bloodshot eyes.
  • Cough.
  • Fever.
  • Light sensitivity.
  • Muscle pain.
  • Eye redness.
  • Runny nose.
  • Sore throat.
  • Small white spots in the mouth.