Measles is a highly contagious viral infection that can cause serious complications, especially in young children and adults with weakened immune systems. The symptoms of measles usually appear around 10 to 14 days after exposure to the virus. The symptoms of measles include:

• Fever: A high fever is one of the first symptoms of measles and can spike to more than 104°F.

• Cough: A persistent cough is another common symptom of measles.

• Runny nose: Measles can cause a runny nose, also known as coryza.

• Red, watery eyes: Conjunctivitis, or red, watery eyes, is another common symptom of measles.

• Koplik spots: Tiny white spots with bluish-white centers may appear inside the mouth two to three days after symptoms begin.

• Rash: A rash usually appears 3 to 5 days after the first symptoms and typically starts on the face and spreads downward to the neck, trunk, arms, legs, and feet. The rash is made up of small red spots, some of which are slightly raised. Spots and bumps in tight clusters give the skin a splotchy red appearance. The rash may last for up to a week.

Other symptoms of measles may include:

• Sore throat: Measles can cause a sore throat.

• Muscle pain: Measles can cause muscle pain.

• Sensitivity to light: Light can make your eyes hurt if you have measles.

If you or your child have been exposed to measles and you think you may have symptoms, it is important to call your healthcare provider immediately. Complications of measles can be serious, especially...