Introduction Measles is a highly contagious viral illness that spreads through respiratory droplets and can lead to serious complications—especially in unvaccinated children and adults. While vaccines have dramatically reduced its global burden, measles outbreaks still occur, often due to low vaccination coverage. Recognizing the early and classic symptoms of measles—including the hallmark rash, fever, cough, and Koplik’s spots—can help with early diagnosis and prevent further spread. What Causes Measles? Measles is caused by the measles virus, a member of the paramyxovirus family. It spreads through: Measles is extremely contagious—up to 90% of unvaccinated people in close contact with an infected…