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ILAR (International League of Associations for Rheumatology) Criteria for "Other" Juvenile Arthritis

Purpose: To evaluate a patient for idiopathic juvenile "other" arthritis using the ILAR criteria.

Description

The International League of Associations for Rheumatology (ILAR) has listed criteria for the diagnosis of idiopathic juvenile arthritis that does not meet the other described categories. The original criteria proposed in Santiago, Chile, in 1994 were modified at Durban, South Africa, in 1997.


Criteria for juvenile arthritis:

(1) onset before 16th birthday

(2) duration for at least 6 weeks

 

Criteria for the diagnosis of "other" arthritis - one of the following:

(1) does not match any of the other categories

(2) meets the criteria for more than one of the other categories

 

Exclusion:

(1) meets criteria for just one of the other categories

 

Although not stated in the criteria, I imagine you would need to exclude infection and malignancy, as is done for systemic arthritis.

 

Pattern

Presence Requires Exclusion of

Not Excluded

systemic

none of the other forms

none (presence excludes all other forms)

oligoarthritis

all the other forms

none

polyarthritis, RF negative

systemic, oligoarthritis, polyarthritis RF positive

enthesitis, psoriatic

polyarthritis, RF negative

systemic, oligoarthritis, polyarthritis RF positive

psoriatic, enthesitis

psoriatic

systemic, polyarthritis RF positive

polyarthritis RF negative

enthesitis

systemic, psoriatic

polyarthritis RF positive, polyarthritis RF negative

 


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Specialty

Objective

ICD-10