ARREGUIN-REYES, Roberto et al. Description of a cohort of patients with Juvenile Idiopathic Arthritis in the state of Sonora Mexico. []. , 23, 4, pp.236-241. ISSN 0121-8123.  https://doi.org/10.10167j.rcreu.2016.06.004.

Introduction: Juvenile idiopathic arthritis (JIA) is one of the most common childhood chronic degenerative diseases causing serious sequelae such as disability and blindness with clinical course, prognosis and treatment for all different phenotypes. Objective: To determine the most common clinical subtypes of JIA in the rheumatology of a second level hospital care in northwestern Mexico. Material and methods: Under a cohort design were studied patients with JIA in rheumatology service. The classification into subtypes of the disease was performed by clinical and laboratory criteria issued by the ILAR. The frequency of the subtypes of JIA, as well as the latter's association with sociodemographic variables such as age and gender was measured. Results: From 35 patients with JIA predominance of female gender was 74% of the cases studied. The most affected age group was observed in patients between 10 and 12, most frequent subtypes was arthritis associated with enthesitis (40%) and poly articular JIA with positive rheumatoid factor (20%). Significant association between age and gender and gen-der cases and subtype of JIA found. Conclusions: JIA cases presented at an earlier age in the male gender, unlike girls in wich age presentation comes between 10 and 12 years.

: Juvenile idiopathic arthritis; ILAR classification.

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