The symptoms of high uric acid or gout come in stages. There will be different clinical symptoms in different stages. The first stage, the asymptomatic hyperuricemia stage. At this stage, only blood tests can reveal an increase in blood uric acid concentration, but there are no typical clinical symptoms, so it is not easy to detect. The second stage is the acute attack of gout. The typical manifestation is mainly redness, swelling, heat and pain around the affected joints. The third stage, the chronic gouty arthritis stage. Mainly in the joint areas, such as the thumb joint, the first metatarsal phalangeal joint, ankle joint, knee joint, etc., there is massive deposition of gout crystals, joint destruction and deformation, and local functional impairment. The fourth stage, chronic gouty kidney damage stage. The main manifestations are chronic kidney damage and kidney stones.