Quick answer. Mumps is a contagious viral infection that classically causes painful swelling of the parotid glands at the cheek and jaw. It is largely preventable with the MMR vaccine, and in Singapore it is a legally notifiable disease that doctors must report to the Ministry of Health (MOH).
Mumps is a viral illness best known for the puffy, tender swelling it causes along the jawline and cheeks. Before routine childhood immunisation it was a very common infection of school-aged children, and although the MMR vaccine has made it much less frequent in Singapore, clusters still occur, particularly among people who were never vaccinated or who have incomplete protection. Most people recover fully, but mumps can occasionally lead to complications affecting the testicles, ovaries, brain or hearing.
This guide explains what mumps is, how to recognise it, how it spreads, and how it is diagnosed and managed in Singapore. It also covers when to seek medical care and which doctor to see. Because mumps is a notifiable disease under MOH rules, a confirmed or suspected case will be reported to the authorities as part of routine disease surveillance.
At a glance
| Feature | Typical mumps | When to worry |
|---|---|---|
| Gland swelling | Painful swelling of one or both parotid glands (cheek/jaw), peaks over 1-3 days | Swelling with severe headache, neck stiffness or confusion |
| Fever | Low to moderate fever, tiredness, headache, muscle aches | High fever that does not settle or worsening drowsiness |
| Testicles (males) | Usually none | Sudden testicular pain and swelling (orchitis) |
| Duration | Most settle within about 1-2 weeks | Symptoms worsening rather than improving after a week |
| Contagious period | From a few days before to about 5 days after swelling starts | Continued spread in unvaccinated close contacts |
What is mumps?
Mumps is an infection caused by the mumps virus, a paramyxovirus that mainly targets the salivary glands. The most recognisable feature is swelling of the parotid glands, which sit just in front of and below the ears, giving the face a characteristic puffy, hamster-cheek appearance. The swelling may affect one or both sides.
It once mostly affected children, but with widespread MMR vaccination the people most likely to catch mumps today are those who are unvaccinated, partially vaccinated, or whose immunity has waned. In Singapore, mumps is uncommon thanks to the National Childhood Immunisation Schedule, but it has not disappeared, and outbreaks can still occur in settings where many people are in close contact.
Symptoms & signs
Symptoms usually appear about two to three weeks after exposure. Some people have very mild illness or none at all, while others feel quite unwell. Common features include:
- Painful swelling of one or both parotid glands at the cheek and jaw
- Pain when chewing, swallowing or eating sour foods
- Fever, headache and tiredness
- Muscle aches and loss of appetite
- A dry mouth or discomfort around the ear on the affected side
The swelling typically builds up over a few days and then gradually settles over one to two weeks.
How it spreads & who is at risk
Mumps spreads easily from person to person through respiratory droplets, when an infected person coughs, sneezes or talks, and through direct contact with saliva, for example by sharing cups, utensils or through kissing. A person is infectious from a few days before the gland swelling appears to about five days afterwards, which is part of why it spreads so readily.
The main risk factor is lack of immunity. People who never received the MMR vaccine, who had only one dose, or whose protection has faded are most at risk. Crowded or close-contact environments, such as childcare centres, schools, hostels and military camps, can allow the virus to pass between susceptible people. Anyone, including adults, can catch mumps if they are not protected.
How it is diagnosed
Doctors can often recognise mumps from the typical parotid swelling and the pattern of symptoms, especially if there has been a known exposure. To confirm the diagnosis or to distinguish mumps from other causes of facial or gland swelling, a doctor may order:
- A saliva, throat or urine sample to detect the virus (PCR testing)
- A blood test to look for antibodies against the mumps virus
Because mumps is a notifiable disease in Singapore, a doctor who diagnoses or strongly suspects it is required to report the case to MOH. This helps the authorities track and contain spread.
Treatment & prevention
There is no specific antiviral cure for mumps, so treatment focuses on comfort and rest while the body clears the infection. Helpful measures include:
- Plenty of rest and fluids
- Paracetamol or other simple pain relief for fever and discomfort, as advised by a doctor
- Soft foods and avoiding sour or acidic items that trigger gland pain
- Cool or warm compresses over swollen glands for comfort
The most effective protection is the MMR (measles-mumps-rubella) vaccine, given to children under the National Childhood Immunisation Schedule and available to adults who are not immune. Staying home while infectious helps protect others, particularly unvaccinated people.
When to see a doctor & which specialist
See a doctor if you or your child has painful gland swelling with fever, especially if mumps is going around or vaccination is incomplete. Seek medical care promptly, and go to A&E or call 995 for emergencies, if there are any warning signs of complications:
- Severe headache, neck stiffness, persistent vomiting or confusion (possible meningitis or encephalitis)
- Sudden, severe testicular pain and swelling in males (orchitis)
- New abdominal pain in females (possible ovarian involvement)
- Sudden hearing loss
- High fever that will not settle or increasing drowsiness
For most cases, your first stop is a family doctor, who can assess you, advise on care, arrange testing and handle MOH notification. Find one through our directory of GP clinics in Singapore.
Related guides
- Best Paediatric Clinics in Singapore — our editorial shortlist
- paediatric clinics directory
- Measles
- Liver transplant
- Ganglion cyst
- Lipoma
- Molluscum contagiosum
Sources
- HealthHub Singapore – Mumps
- Ministry of Health Singapore – Notifiable diseases
- NHS – Mumps
- Mayo Clinic – Mumps
Find a specialist
Prefer a named doctor? See our independent, sub-specialty-grouped directory of paediatricians in Singapore.
Part of our Infections & sexual health guides · Browse all health topics