Measles
Based on CDC and WHO guidance, checked against those sources on Oct 12, 2026. Educational information only — not a diagnosis or a substitute for a licensed healthcare professional.
Common symptoms
- High fever (may be above 104°F / 40°C)
- Cough
- Runny nose
- Red, watery eyes
- Tiny white spots inside the mouth (2–3 days after symptoms begin)
- A rash that starts on the face at the hairline and spreads down the body (3–5 days after symptoms begin)
Symptoms usually begin 7–14 days after exposure (can be up to 21 days). These symptoms can also be caused by other illnesses.
Seek emergency care for
- Trouble breathing or fast breathing
- Pain when breathing or coughing
- Signs of dehydration: dry mouth, very little urine, no tears
- A fever or headache that won't stop
- Confusion, less alertness, or severe weakness
- In young children: bluish color around the mouth, very low energy, or trouble feeding
When to contact a healthcare professional
- Immediately if you think you have been exposed and are not sure you are immune.
- If a fever and rash develop, especially after travel or a known exposure.
- If a person with measles develops ear pain, diarrhea, or seems to be getting worse.