Juvenile idiopathic arthritis has a variable prognosis, depending on the subtype, and cannot be generalized. According to the affected joints, it can be categorized into oligoarticular, polyarticular and systemic types.
1. oligoarticular type: refers to the involvement of 1~4 joints within the first six months of disease onset, which can be divided into persistent type and extended type. The prognosis of this type is relatively good, but some children are prone to recurrent disease. Patients with the extended type may also have joint destruction when they grow up.
2. Polyarticular type: refers to more than five joints being involved within the first six months of the disease, which can be divided into rheumatoid factor-negative and positive types. This type is more likely to cause disability, and rheumatoid factor positive is more likely to cause disability than negative.
3. Systemic type: each fever is at least two weeks old and accompanied by arthritis, enlarged lymph nodes, enlarged liver and spleen, etc. This type is the most severe and can be easily combined with megaloblastoma. This type is the most severe and can easily be combined with macrophage activation syndrome and become life-threatening. Growing up varies greatly, and some may develop severe joint destruction and even amyloidosis.
Patients with juvenile idiopathic arthritis are advised to consult a regular hospital for standardized diagnosis and treatment under the guidance of a doctor in order to improve the prognosis.