Measles is a common respiratory infection in children that is spread by respiratory droplets. Clinically, it can manifest as fever, conjunctivitis, red papules on the skin, and mucosal spots on the buccal mucosa, which can be pigmented after the rash subsides. It is mainly caused by a viral infection, and the infected patient is the only source of infection for the disease. The rash is contagious for five days after it disappears and is most likely to be transmitted by children between the ages of eight months and three years. Repeated fevers are followed by a rash and oral coryza, and some severe cases may be combined with pneumonia, myocarditis, and encephalitis.