What is the classification of juvenile idiopathic arthritis according to Ilar?

The ILAR classification of JIA includes the following categories: Systemic-onset JIA. Persistent or extended oligoarthritis. Rheumatoid factor (RF)–positive polyarthritis.

What are the different types of juvenile rheumatoid arthritis?

There are several types of JIA:

• Systemic onset JIA. This type affects one or more joints.
• Oligoarticular JIA. This type affects 1 to 4 joints in the first 6 months of disease.
• Polyarticular JIA.
• Enthesitis-related JIA.
• Psoriatic arthritis.
• Undifferentiated arthritis.

What is polyarticular juvenile arthritis?

Polyarticular juvenile idiopathic arthritis (formerly called polyarticular-onset juvenile rheumatoid arthritis [RA]) is a subset of juvenile idiopathic arthritis (JIA) that is defined by the presence of more than four affected joints during the first six months of illness [1].

What are Ilar classification criteria for juvenile idiopathic arthritis?

Merino R, de Inocencio J, Garcia-Consuegra J. Evaluation of Revised International League of Associations for Rheumatology Classification Criteria for Juvenile Idiopathic Arthritis in Spanish Children (Edmonton 2001). J Rheumatol 2005;32:559-61.

What kind of disease is juvenile idiopathic arthritis?

Juvenile idiopathic arthritis (JIA) is a clinically heterogeneous group of diseases, the study of which has been hindered by the lack of a classification system that is accepted internationally.

How old do you have to be to be diagnosed with Jia?

JIA can be diagnosed if age at onset is under 16 years, disease duration is 6 weeks or greater, and other known conditions are excluded. Systemic-onset JIA: Systemic arthritis is diagnosed if there is arthritis in 1 or more joints with, or preceded by,…

Are there any diagnostic criteria for juvenile idiopathic disorder?

An international consensus was reached to identify different proposed homogeneous chronic disorders that fall under the historical term JIA. These preliminary criteria will be formally validated with a dedicated project.