B26: Mumps

B26.2: Mumps encephalitis

Mumps is caused by viruses. With mumps, your face swells up in front of and behind your ear. Both sides of your face may be affected. Your face may then be painful. You may also get a fever.

The mumps virus has inflamed your brain. When the brain is inflamed, a person can lose consciousness and get cramp attacks. You may behave and think differently. You may sometimes no longer be able to control your own movements.