At a glance

  • Fluid-filled sacs called bursae act as cushions to protect certain parts of our body.
  • If these sacs are irritated or injured, they can become inflamed.
  • This causes pain, swelling and reddening.
  • If this inflammation is caused by bacteria, you may develop a fever as well.
  • It is important to rest the swollen area. Cold packs and painkillers can help.
  • Cortisone is sometimes injected into the bursa too. Antibiotics or surgery are effective if the inflammation is bacterial.


Photo of a roofer

Bursitis is an in one of the small, fluid-filled sacs (bursae) often found near joints in the body. It can be very painful and limit mobility. The can result when too much pressure is put on one of these sacs (a bursa).

The bursae (Latin for bags) are made of connective tissue and filled with synovial fluid. Like tiny pillows, they cushion parts of the body like the elbows, which are often exposed to friction or pressure. When you prop your elbows on a hard tabletop, the bursa prevents the bone from pressing too hard against your skin. There are over one hundred bursae in the human body, many of them near joints.

Bursitis can also be caused by a – usually bacterial – .


If a bursa becomes inflamed, more fluid will build up inside it than usual. Doctors call this effusion. This leads to swelling that you can feel and see from the outside – especially if the inflamed bursa is right under the skin.

Illustration: Healthy and inflamed elbow bursa

The swollen area hurts when resting, but is especially painful when moved or when pressure is put on it from the outside. It sometimes looks red and feel warm too. You may also develop a fever and generally feel unwell.

Causes and risk factors

Bursae often become inflamed if they are injured by a heavy blow – for example during a fall – or if they are irritated by too much friction or pressure. For this reason, some jobs are associated with a higher risk of bursitis. Tile installers are a typical example: Their work often involves kneeling on hard floors, so it’s not unusual for them to develop kneecap bursitis. Other high-risk occupations include cleaners, carpenters, roofers and gardeners. Working for a long time at a computer or doing some types of sports such as volleyball may also make bursitis more likely.

Germs like bacteria can enter the bursa too, causing there. This may happen due to an injury – but it’s often not possible to tell how the got inside the bursa.

Sometimes inflammatory diseases such as rheumatoid arthritis and gout spread to the bursae as well, causing bursitis.

Prevalence and outlook

Each year, at least 1 out of 10,000 people develop bursitis on the knees or elbows alone. One third of these inflammations are caused by a bacterial .

Middle-aged men are often affected. That’s probably because they more commonly have jobs that are associated with a greater risk of bursitis. If the area is rested, the usually goes away within 2 or 3 weeks. Sometimes it remains permanently, though – for example, because the person continues (or has to continue) doing the activity that caused it in the first place. Chronic diseases such as diabetes and rheumatoid arthritis may delay recovery too, or even make the worse.


Inflamed bursae that are right under the skin can easily be diagnosed: They are swollen and painful, and are sensitive to pressure. Reddened, warm skin is also a sign of .

Bursitis most commonly affects the elbows, knees, shoulders, hips and feet.

Illustration: Inflamed bursa: commonly affected parts of the body

It is important to find out whether the is caused by . If you have a fever and/or a wound close to the inflamed area, it is likely to be a bacterial . In order to check whether that is the case, the doctor takes some fluid from the bursa using a hollow needle (cannula) and has it tested in a laboratory. Blood tests can detect further signs of an or show whether the is being caused by a disease such as gout.

Imaging techniques like ultrasound or x-rays are used to rule out other possible causes of the symptoms, such as bone or joint injuries. They can also help to check whether the bursitis may have already damaged nearby tissue.


The most commonly recommended treatments for bursitis involve keeping the swollen area still (immobilized) and protecting it from further pressure. Things like cold packs or painkillers can help. After the goes away, it’s important to avoid putting too much pressure on the joint to stop bursitis from coming back. For instance, people who often work in a kneeling position can use kneepads to protect their knees. If you are wondering whether such measures could help, you can seek advice – perhaps from an occupational health specialist.

If the bursitis doesn’t get better or comes back despite taking the measures described here, steroids are sometimes injected into the bursa. If the becomes chronic, the affected bursa is usually surgically removed. In cases where bursitis is caused by a bacterial , surgery is more urgently recommended. But bacterial bursitis is first treated with , which is often enough. Steroids aren’t used, though. They would do more harm than good in this case. Other medication may be needed if the bursitis is caused by a particular medical condition like gout or rheumatoid arthritis.

Baumbach SF, Lobo CM, Badyine I et al. Prepatellar and olecranon bursitis: literature review and development of a treatment algorithm. Arch Orthop Trauma Surg 2014; 134(3): 359-370.

Lippert H. Lehrbuch Anatomie. München: Urban und Fischer; 2017.

Niethard FU, Pfeil J, Biberthaler P. Duale Reihe Orthopädie und Unfallchirurgie. Stuttgart: Thieme; 2014.

Pschyrembel Online. 2021.

Rinkel WD, Schreuders TA, Koes BW et al. Current evidence for effectiveness of interventions for cubital tunnel syndrome, radial tunnel syndrome, instability, or bursitis of the elbow: a systematic review. Clin J Pain 2013; 29(12): 1087-1096.

IQWiG health information is written with the aim of helping people understand the advantages and disadvantages of the main treatment options and health care services.

Because IQWiG is a German institute, some of the information provided here is specific to the German health care system. The suitability of any of the described options in an individual case can be determined by talking to a doctor. informedhealth.org can provide support for talks with doctors and other medical professionals, but cannot replace them. We do not offer individual consultations.

Our information is based on the results of good-quality studies. It is written by a team of health care professionals, scientists and editors, and reviewed by external experts. You can find a detailed description of how our health information is produced and updated in our methods.

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Updated on May 4, 2022

Next planned update: 2025


Institute for Quality and Efficiency in Health Care (IQWiG, Germany)

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