This disease mimics gout, causing sudden, painful swelling in one or more joints. Treatments can reduce the pain and improve joint function.
Update Date: 10.03.2026
Pseudogout (SOO-doe-gout) is a type of arthritis that causes sudden and painful swelling in one or more of the joints. Episodes can last for days or weeks.
The medical term for pseudogout is calcium pyrophosphate deposition disease, often shortened to CPPD. But the condition commonly is called pseudogout because its symptoms are similar to those of gout. In both conditions, crystals deposit in the joints, but the types of crystals differ. Pseudogout is caused by calcium crystals while uric acid crystals cause gout.
It isn't clear why crystals form in joints and cause pseudogout, but the risk increases with age. Treatment options are available to help relieve pain and lessen inflammation.
Pseudogout typically affects the knees. Less often, it affects the wrists and ankles. It also may affect large joints, such as the hips. And pseudogout can affect small joints, such as in the fingers and toes. When a pseudogout attack occurs, the affected joints typically are:
Seek medical care if you have sudden, intense joint pain and swelling.
Pseudogout has been linked to calcium pyrophosphate dihydrate crystals forming in the joints. These crystals become more common as people age, appearing on X-rays in nearly half of those over 85. The medical term for this is chondrocalcinosis. But most people who have these crystal deposits never develop symptoms of pseudogout. It's not clear why some people develop symptoms while others don't.
Factors that can increase the risk of pseudogout include:
The crystal deposits associated with pseudogout can damage joints, causing symptoms similar to those of osteoarthritis or rheumatoid arthritis.
Pseudogout symptoms are similar to those of gout and other types of arthritis, so lab and imaging tests typically are necessary to confirm a diagnosis.
Blood tests assess the function of your thyroid and parathyroid glands. And they can find mineral imbalances linked to pseudogout.
To test the fluid in your affected joint for the presence of crystals, your healthcare professional may withdraw a sample of the fluid with a needle. This procedure is called joint aspiration. It's also known as arthrocentesis.
X-rays can show joint damage and crystal deposits in the joint's cartilage.
There's no cure for pseudogout, but a combination of treatments can help relieve pain and improve the joint's function.
Pseudogout is treated with medicines that lessen pain and swelling during flare-ups and help prevent future episodes. If pain medicines you buy without a prescription don't lessen your pain, your healthcare professional may prescribe one or more of these medicines:
Removing fluid from a swollen joint may help ease pain and pressure. During this procedure, a healthcare professional uses a needle to withdraw a sample of fluid from the joint. This is called joint aspiration or arthrocentesis. This not only relieves discomfort but also removes some of the crystals that may cause inflammation. After the fluid is removed, a numbing medicine and a corticosteroid may be injected into the joint to relieve pain and lessen inflammation.
Home treatments may help lessen pain and inflammation during pseudogout flare-ups. Examples include:
You'll likely first see your primary healthcare professional. After an initial exam, your healthcare professional may refer you to a rheumatologist. A rheumatologist is a doctor who specializes in the diagnosis and treatment of arthritis and other inflammatory joint conditions.
Here's some information to help you get ready for your appointment.
Before your appointment, you may want to write a list of answers to the following questions:
A healthcare professional who sees you for symptoms common to pseudogout may ask several questions. You may be asked:
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