Gout is a metabolic disorder, a disease in which defective metabolism of uric acid causes arthritis, especially in the smaller bones of the feet, deposition of chalkstones, and episodes of acute pain. The result is swelling and stiffness, and in some cases, people feel severe pain and swelling that develops in just a few hours. The main reason for gout is the uric acid overload. It appears due to inefficient waste elimination or excessive creation of it. The uric acid is a breakdown product of purines that are part of many foods. In gout, there are frequently, but not always, elevated levels of uric acid in the blood (hyperuricemia). However, only a small portion of those with hyperuricemia will develop gout.