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Gout and crystal arthropathy

10 articles

Calcium pyrophosphate dihydrate crystal deposition disease

Calcium pyrophosphate dihydrate crystal deposition disease (CPPD, pseudogout) is crystal arthritis from CPP crystals in joints, mainly in older adults; phenotypes include acute arthritis, chronic arthritis, OA with CPPD, and crowned dens syndrome; no disease-modifying therapy exists.

Colchicine

Colchicine, a tubulin-binding alkaloid from Colchicum autumnale, treats acute gout flares, prevents flares during urate-lowering therapy, and treats familial Mediterranean fever; low doses work with fewer adverse events than high doses.

Drug-induced gout

Drug-induced gout is gout that develops as a side effect of medications, usually diuretics and other drugs that reduce renal urate excretion, or that follows rapid urate lowering.

Familial calcium pyrophosphate deposition

Familial calcium pyrophosphate deposition (familial CPPD, hereditary chondrocalcinosis) is a rare autosomal dominant disease causing early-onset (20-40 years) joint cartilage calcification from ANKH, CCAL1, or TNFRSF11B mutations, in about 100 families worldwide.

Febuxostat

Febuxostat (Adenuric, Uloric) is a nonpurine xanthine oxidase inhibitor for hyperuricemia in gout, FDA-approved 2009; CARES showed higher cardiovascular death versus allopurinol, FAST did not, prompting a US boxed warning.

Gout

Gout: inflammatory arthritis from monosodium urate crystal deposition due to hyperuricemia; flares of severe joint pain (often the big toe), tophi, treated with colchicine, NSAIDs, and urate-lowering drugs like allopurinol.

Primary gout

Primary gout is gout occurring without an identified acquired cause of high blood urate, such as another disorder or urate-raising drugs; it has risen most in older men.

Probenecid

Probenecid (Benemid) is a uricosuric, OAT1/OAT3/URAT1-inhibiting drug introduced in 1950 to prolong penicillin, now a second-line gout urate-lowering agent with research uses in neurology and cardiology.

Sulfinpyrazone

Sulfinpyrazone (Anturane) is an oral uricosuric drug, a phenylbutazone analog that lowers serum urate in chronic gout by blocking uric acid reabsorption in the kidney.

Tophaceous gout

Tophaceous gout, also called chronic tophaceous gouty arthropathy, is advanced gout with tophi, urate crystal deposits in tissues; treated with treat-to-target urate-lowering therapy, lower urate targets, and pegloticase for refractory tophi.