Mumps is a viral disease caused by the mumps virus. It is characterized by painful swelling of the parotid glands, called parotitis, which is usually preceded by fever, headache, malaise, muscle pain, and loss of appetite. The mumps virus is transmitted through respiratory secretions and direct contact, and has an incubation period of 16-18 days. While vaccination is the best prevention, treatment focuses on relieving symptoms through rest, hydration, and use of antipyretics.