Pseudogout
DEFINITION
Pseudogout (SOO-doe-gout) is a form of arthritis characterized by sudden, painful swelling in one or more of your joints. These episodes can last for days or weeks. The most commonly affected joint is the knee.
Also called calcium pyrophosphate deposition disease, the common term “pseudogout” was coined for the condition’s similarity to gout. Both conditions are caused by crystal deposits within a joint, although the type of crystal differs for each condition.
It isn’t clear why crystals form in your joints and cause pseudogout, but the risk increases with age. Treatments can help relieve pain and reduce inflammation.
CAUSES
Pseudogout has been linked to the presence of calcium pyrophosphate dihydrate crystals within the affected joint. These crystals become more numerous as people age, appearing in nearly half the population older than 85. But most people who have these crystal deposits never develop pseudogout. It’s still unclear why some people have symptoms and others don’t.
SYMPTOMS
Pseudogout most commonly affects the knees. Less often, wrists and ankles are involved. During a pseudogout attack, the affected joints are usually:
- Swollen
- Warm
- Severely painful
When to see a doctor
Make an appointment with your doctor if you experience sudden, intense joint pain and swelling.
