The general worsening of psoriatic arthritis over a number of years cannot be generalized, but is specifically related to the control of the disease; patients with better control of the disease will not experience worsening, while patients with poorly controlled disease may experience worsening over a number of years. Psoriatic arthritis may cause arthritic symptoms such as joint pain, swelling, stiffness, impaired mobility, and tenderness, as well as psoriatic lesions such as red pimples and plaques, and symptoms such as dented, peeling, and discolored nails. Psoriatic arthritis can be treated with general therapy, medication, physical therapy, and biologics to relieve symptoms and protect joint function. The prognosis of psoriatic arthritis is related to the control of the disease. Most of the patients can be relieved of the symptoms with active treatment and have a relatively good prognosis, but those who do not receive standardized treatment or have untimely treatment have a poorer prognosis, and may suffer from ankylosis of the joints, muscular atrophy, deformity of the joints, and disability within a few years. It is recommended that patients with psoriatic arthritis should seek timely medical treatment and standardize the treatment under the guidance of doctors in order to better control the condition, improve the quality of life and reduce the occurrence of complications.