Description

Mumps is a contagious viral infection that mainly affects the salivary glands, particularly the parotid glands located on both sides of the face below and in front of the ears. When these glands become infected and swollen, the cheeks and jaw area may appear puffy, which is one of the most recognizable signs of mumps.

Mumps is caused by the mumps virus, which belongs to the paramyxovirus family. It spreads from person to person through respiratory droplets and saliva. The infection can occur when an infected person coughs, sneezes, talks, or shares items that have been contaminated with saliva.

Mumps was once a common childhood infection, but widespread use of the MMR vaccine, which protects against measles, mumps, and rubella, has significantly reduced the number of cases in many countries. However, outbreaks can still occur, particularly in communities where vaccination coverage is low or where people live in close contact.

Mumps most commonly affects children and teenagers, but adults can also become infected. Symptoms usually appear after an incubation period of several weeks. Some infected people may have mild symptoms or no noticeable symptoms at all.

Common symptoms include swollen cheeks, painful or swollen salivary glands, fever, headache, muscle aches, tiredness, loss of appetite, and pain when chewing or swallowing. Some people may experience swelling on one side of the face, while others develop swelling on both sides.

Although many people recover from mumps without major problems, the infection can occasionally cause complications. In older children and adults, complications may include inflammation of the testicles or ovaries, meningitis, encephalitis, hearing problems, and inflammation of the pancreas.

There is no specific medicine that eliminates the mumps virus. Treatment mainly focuses on relieving symptoms, getting adequate rest, maintaining hydration, and preventing the infection from spreading to others.

The best way to prevent mumps is vaccination. Following recommended vaccination schedules and avoiding close contact with infected people can significantly reduce transmission.

Causes

Mumps is caused by the mumps virus. It is a highly contagious infection that can spread between people through respiratory droplets and saliva.

When an infected person coughs, sneezes, talks, or shares saliva, virus-containing particles can enter the surrounding environment.

Close contact increases the chance of transmission. This is why mumps can spread in households, schools, universities, childcare centers, and other crowded environments.

Sharing cups, bottles, utensils, or other objects that have come into contact with an infected person's saliva can also contribute to transmission.

Mumps can spread before the infected person develops obvious symptoms. This makes it possible for someone to infect others without realizing they are carrying the virus.

People can remain contagious for several days around the time when salivary gland swelling develops.

A major risk factor for mumps is not being vaccinated or not having adequate protection from previous vaccination.

The MMR vaccine provides protection against mumps along with measles and rubella.

Outbreaks can occur when many people in a community are unvaccinated or when immunity is lower than expected.

Close living conditions can increase transmission because people have more frequent contact with one another.

Mumps can affect people of any age, but complications are generally more concerning in adolescents and adults than in young children.

The virus enters the body through the respiratory tract and then spreads through the bloodstream to tissues, particularly the salivary glands.

Mumps is not caused by cold weather, eating particular foods, or ordinary changes in temperature. It occurs because of infection with the mumps virus.

Symptoms

Mumps symptoms can vary from mild to more noticeable. Some people may become infected without developing the classic swollen cheeks.

One of the most characteristic symptoms is swelling of the salivary glands. The parotid glands, located near the ears and jaw, may become enlarged and tender.

The swelling can make the face appear rounder or puffier than usual. It may affect one side or both sides of the face.

Pain around the jaw and ears can occur, particularly when chewing or swallowing.

Fever is common and may develop before or around the same time as facial swelling.

Headache and general body aches can make a person feel unwell.

Tiredness and weakness are also common symptoms. Some people may need several days of rest before feeling normal again.

Loss of appetite may occur because chewing and swallowing can become painful.

Dry mouth may sometimes develop because swollen salivary glands may not produce saliva normally.

Some people experience sore throat or general discomfort around the mouth and throat.

In adolescents and adults, mumps can sometimes cause swelling or pain in the testicles, a condition known as orchitis. It may occur after the facial symptoms or sometimes with other symptoms.

In females, inflammation of the ovaries can occasionally occur and may cause lower abdominal pain.

Mumps can rarely affect the nervous system. Severe headache, stiff neck, vomiting, confusion, unusual sleepiness, or seizures may indicate meningitis or encephalitis and require urgent medical attention.

Hearing changes or hearing loss are uncommon but possible complications.

Most symptoms gradually improve over several days, and the swelling generally resolves as the infection clears.

A person with symptoms of mumps should avoid close contact with others and seek medical advice, particularly if there is significant facial swelling, severe headache, difficulty swallowing, or other concerning symptoms.

Prevention

The most effective way to prevent mumps is vaccination. The MMR vaccine protects against measles, mumps, and rubella and is routinely given according to recommended immunization schedules.

People should follow the vaccination schedule recommended by their local health authorities. Those who are unsure about their vaccination history can discuss it with a healthcare professional.

Vaccination not only protects the individual but also helps reduce the spread of mumps within the community.

Good hygiene can also help reduce transmission. Washing hands regularly with soap and water is particularly important after coughing, sneezing, or touching the face.

Covering the mouth and nose when coughing or sneezing helps reduce the spread of respiratory droplets.

People with suspected or confirmed mumps should avoid close contact with others during the period when they can spread the infection.

Sharing cups, bottles, utensils, towels, or other personal items should be avoided when someone is infected.

Frequently touched surfaces can be cleaned regularly, particularly in households, schools, and other shared environments.

People should avoid attending school, work, or crowded social activities while they are contagious and should follow medical or public health guidance about returning.

If a person has been exposed to mumps, they should monitor themselves for symptoms and contact a healthcare professional if symptoms develop.

Pregnant people who have been exposed to mumps should discuss the situation with their healthcare provider, especially if their vaccination status is uncertain.

There is no reliable home remedy that can prevent mumps after exposure. Vaccination is the main preventive measure.

Although most people recover completely, mumps can occasionally cause serious complications. Early recognition of concerning symptoms and appropriate medical care are therefore important.

Mumps is now much less common in many regions because of vaccination, but outbreaks can still happen. Maintaining high vaccination coverage, practicing good hygiene, and avoiding close contact with infected individuals can help reduce transmission.

Anyone who develops unexplained swelling around the jaw or ears along with fever, headache, or other symptoms should seek medical advice. Proper diagnosis is important because several other infections and conditions can cause similar facial swelling.

Medical Information Trust
Evidence-Based Information
Last Updated: October 28, 2026
YMYL Compliant

Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider. In an emergency, call emergency services immediately.