The visible signs of mumps start with swelling in the cheeks and jaw
Mumps causes a distinctive swelling of the salivary glands — the glands that make saliva in your mouth. This swelling usually appears on both sides of the face, in the area between the ear and the jaw. The cheeks and the area under the chin puff out noticeably, sometimes making the face look round or puffy. This swelling is often the first thing people notice and is the reason mumps got its name.
The swelling typically appears three to five days after a person catches the mumps virus. It can start on one side of the face and spread to the other side within a day or two, though sometimes only one side swells. The skin over the swollen area usually looks normal in color — it is not red or discolored — but it feels tender and sore when touched.
Key Takeaways
- Mumps causes visible puffiness in the cheeks and under the chin, usually on both sides of the face, starting three to five days after infection.
- A person with mumps often has a fever, body aches, and fatigue that appear before or alongside the facial swelling.
- The swelling is tender to the touch and may make chewing or swallowing painful, especially when eating sour or acidic foods.
- Mumps can cause swelling in other parts of the body beyond the face, including the pancreas, testicles, or ovaries, though these are not always visible.
Fever and body aches often come before the swelling appears
Before the characteristic cheek swelling shows up, most people with mumps experience symptoms that look like a mild flu. These include a fever (usually between 101 and 104 degrees Fahrenheit), body aches, headache, and fatigue. Some people also lose their appetite or feel generally unwell. These early symptoms typically last for a few days.
The fever and body aches can make it hard to tell mumps from other viral illnesses at first. The key difference is that mumps progresses to the distinctive facial swelling, while most other common viruses do not. If someone has had these flu-like symptoms and then develops puffy cheeks and jaw swelling, mumps becomes much more likely.
Pain when eating or drinking is a common complaint
Because the swollen salivary glands are tender, people with mumps often experience pain when they chew, swallow, or eat — especially when eating foods that are sour, salty, or acidic. Citrus fruits, tomatoes, pickles, and even lemon juice can trigger sharp pain in the swollen glands. Some people find it difficult to open their mouth fully or to eat solid foods.
Drinking can also be uncomfortable, though water is usually easier to manage than juice or other acidic drinks. This pain and difficulty eating can last for several days as the swelling gradually goes down. The swelling typically peaks around the third or fourth day and then slowly improves over the next week or two.
Swelling in other parts of the body may not be visible
While the facial swelling is the most obvious sign of mumps, the virus can cause swelling in other glands and organs that you cannot see from the outside. In some cases, the mumps virus affects the pancreas (which can cause abdominal pain), the testicles in males (which can cause pain and swelling in the groin), or the ovaries in females (which can cause pelvic pain). These internal swellings happen in only a portion of people who get mumps, and they may occur with or without the typical cheek swelling.
A person might have mumps affecting internal organs without realizing it, because the only sign could be pain in the abdomen or groin area. If someone has the typical facial swelling of mumps plus pain in these areas, it is important to mention this to a doctor, as it can affect how the illness is monitored.
How mumps looks different from other causes of facial swelling
Facial swelling can happen for several reasons — allergies, tooth infections, or other viral infections can all cause puffy cheeks or jaw swelling. The swelling from mumps has some features that help set it apart. Mumps swelling is usually on both sides of the face (though it can start on one side), it is tender to touch, and it comes with fever and body aches. The swelling also has a characteristic soft, doughy feel rather than the hard lump you might feel from a tooth abscess or infection.
Allergic swelling tends to be more localized to one area and is often itchy rather than sore. Swelling from a dental problem is usually on only one side and is accompanied by tooth pain. If someone has the combination of fever, body aches, and bilateral (both-sided) cheek and jaw swelling, mumps is a strong possibility.
The swelling gradually improves over one to two weeks
The facial swelling of mumps does not disappear overnight. It typically reaches its peak around day three or four of illness and then gradually shrinks over the next seven to ten days. By two weeks after the swelling first appears, most people look back to normal, though some mild puffiness can linger a bit longer.
During the time the swelling is present, a person is contagious — meaning they can spread mumps to others. This is why isolation from others is important during the first five days after the swelling appears, or until the fever is gone and the person feels better. Even as the visible swelling goes down, the person may still feel tired or achy for a few more days.
When to contact a doctor about mumps symptoms
If you or someone in your care develops the combination of fever, body aches, and facial swelling — especially swelling on both sides of the face — contact a doctor. A doctor can examine the swelling and ask about other symptoms to confirm whether it is mumps. This is particularly important if the person has not been vaccinated against mumps, or if there is uncertainty about their vaccination status.
Seek medical attention right away if mumps symptoms are accompanied by severe headache, stiff neck, confusion, or chest pain, as these can indicate the virus has affected the brain or other organs. Also contact a doctor if a male with mumps develops severe pain or swelling in the testicles, or if a female develops severe abdominal or pelvic pain, as these complications need medical monitoring.
Frequently Asked Questions
Can you have mumps without the puffy cheeks?
Yes, though it is less common. Some people have mumps that affects internal organs like the pancreas or testicles without developing the typical facial swelling. However, most people who catch mumps do develop the characteristic cheek and jaw swelling. If someone has been exposed to mumps and develops fever and body aches without swelling, a doctor can still test for the virus.
How long does the swelling last?
The swelling usually peaks around day three or four and gradually shrinks over the next week or two. Most people look normal again within two weeks of when the swelling first appeared. However, the person may feel tired or achy for a few extra days even after the swelling is gone.
Is mumps swelling painful to the touch?
Yes, the swollen salivary glands are tender and sore. Touching the cheeks or jaw area where the swelling is can cause discomfort. This tenderness is one of the features that helps distinguish mumps swelling from other causes of facial puffiness, like allergies.
Can mumps cause swelling on just one side of the face?
Yes, mumps can start with swelling on one side of the face and then spread to the other side within a day or two. In rare cases, only one side swells. The swelling is still tender and sore, and the person still has fever and body aches, which helps identify it as mumps rather than a local infection.
What does the skin look like over the swollen area?
The skin over the swollen cheeks and jaw usually looks normal in color — it is not red, hot, or discolored. The area feels puffy and soft to the touch rather than hard or lumpy. If the skin is red, very hot, or the swelling is hard and localized to one spot, it may indicate a different problem like an infection or abscess, and a doctor should evaluate it.