Classification of juvenile ankylosing spondylitis
Last reviewed: 23.04.2024
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Modern concepts of the relationship between diseases classified as spondyloarthritis may reflect the classification proposed in 1997 by Professor E.R. Agababovoy. There are four groups of diseases.
- Spondyloarthritis ankylosing (primary, idiopathic) - Bechterew's disease.
- Spondyloarthritis (secondary) with the following diseases:
- urogenic Reiter's disease;
- postterocerotic reactive arthritis;
- other intestinal and genito-urinary infections;
- psoriatic arthritis;
- nonspecific ulcerative colitis and Crohn's disease;
- SAPHO-syndrome.
- • Spondyloarthritis combined / crossover (indicating combinations of diseases).
- • Spondyloarthritis is undifferentiated (with symptoms).
In the international classifications of the JRA of the American College of Rheumatology and the South African Anti- rheumatic League, separate headings are provided within the oligoarticular variant - subtype II, characterized by the predominant incidence of boys, association with HLA-B27 antigen, and a high risk of developing SAS in a cataclysm ( Juvenile rheumatoid arthritis ). The new classification of juvenile idiopathic arthritis adopted at the Congress of the World League of Rheumatology Associations in 1997 in Durban, refined and supplemented at a similar congress in 2001 in Edmonton, identified a more specific place for the pre-spondylitis stages of juvenile spondyloarthritis.
The international community of pediatric rheumatologists decided to call all chronic inflammatory joint diseases in children juvenile idiopathic arthritis and distinguish seven categories. The definition and the list of exceptions for each of the seven headings do not allow the possibility of a cross between the highlighted variants, and in case of eligibility for two or more categories, the reference to the "Undifferentiated arthritis" group is recommended.
Classification of juvenile idiopathic arthritis (ILAR 1997, 2001)
- Systemic arthritis.
- Polyarthritis, negative for rheumatoid factor.
- Polyarthritis, positive for rheumatoid factor.
- Oligoarthritis:
- persistent;
- spread.
- Arthritis, combined with enthesitis.
- Psoriatic arthritis.
- Undifferentiated arthritis:
- does not correspond to any of the categories;
- meets the criteria of more than one category.
Diseases of the spondyloarthritis circle have their origins among the last three variants of juvenile idiopathic arthritis (JIA) (arthritis associated with enthesitis, psoriatic arthritis and undifferentiated arthritis), although in rare cases development of spondyloarthritis in a catamnesis is possible in patients whose diseases are classified according to the debut in the systemic arthritis, polyarticular seronegative for rheumatoid factor and oligoarticular variants.
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