Gout is a particularly painful form of arthritis that causes swelling in one or more joints, most often at the base joint in the big toe. This inflammation is caused by the accumulation of shard-like urate crystals in the joint. Urate crystals form when your blood’s concentration of uric acid is high, a condition known as “hyperuricemia.” Thus, preventing high uric acid levels is at the heart of many gout attack prevention methods. Learn more about which gout triggers you should avoid here.