MedlinePlus Health Topics
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Measles
Source: MedlinePlus Health Topics, U.S. National Library of Medicine
Last synced 8/15/2026Status: primary verified
Measles is an infectious disease caused by a virus. It spreads easily from person to person. It causes a blotchy red rash. The rash often starts on the head and moves down the body. Other symptoms include: Fever Cough Runny nose Conjunctivitis (pink eye) Feeling achy and run down Tiny white spots inside the mouth Sometimes measles can lead to serious problems. There is no treatment for measles, but the measles-mumps-rubella (MMR) vaccine can prevent it. "German measles", also known as rubella , is a completely different illness. Centers for Disease Control and Prevention
Educational only
This information is for general education and is not medical advice. Always talk to a licensed U.S. clinician about your situation, medications, or treatment decisions.