The redness and swelling of the gouty area may be the growth of gout stones, or it may be the joint symptoms that appear during the gout attack. 1. Gout stone: gout stone can occur in the wrist, ankle, knee, elbow and other parts of the gout patients, often manifested as a foreign body nodules protruding from the skin surface, palpation can have a sense of gravel, and occasionally can be seen through the skin of the yellow crystals, gout stone can cause the nodule parts of the swelling, pain, but also cause the affected joints impaired mobility or deformity. 2. Acute attack of gout: Gout is an inflammation caused by the deposition of urate crystals in the joints and surrounding tissues, when gout attack due to the inflammation stimulation, the patient will experience symptoms of joint swelling and joint pain. It is recommended that patients go to the rheumatology and immunology departments of regular hospitals for detailed consultation and standardized treatment as prescribed by doctors.