Measles causes fever, rash, cough, runny nose and watery eyes. This lasts 1 to 2 weeks. It can also cause ear infections and pneumonia. Measles can also lead to more serious problems, such as brain swelling and even death. Mumps causes fever, headache and painful swelling of 1 or both of the major saliva glands, which causes the cheeks to swell and be very sore.
Mumps usually lasts several days.
It can cause the testicles of boys or men to swell, which can make them unable to have children. This is very rare. Rubella is also called the German measles. It isn't usually serious except to unborn babies. It causes slight fever, a rash and swelling of the glands in the neck.