Crystal arthritis is a type of arthritis caused by the deposition of crystals in the joints. Gout and pseudogout are the two most common types of crystal arthritis. Gout is more common than pseudogout and typically affects middle-aged men. It occurs when uric acid builds up in the blood and forms crystals that deposit in the joints. Pseudogout is less common and typically affects older adults. It occurs when calcium pyrophosphate dihydrate crystals deposit in the joints. 

Diagnosis & Treatment

Diagnosis is based on symptoms, medical history, and laboratory tests.  Imaging and joint aspiration may also be performed as part of the diagnosis process. Treatment involves relieving pain and inflammation of acute attacks and preventing future attacks. Medications such as NSAIDs, colchicine, and corticosteroids can be used. Long-term management may involve medications such as allopurinol, febuxostat, or other urate-lowering therapy.