OBJECTIVES: To evaluate the quality of life measured by SF 36 in adults with juvenile idiopatic arthritis diagnosis and its association with clinical characteristics and functional status. METHODS: Sixty consecutive out patients of the rheumatology unit with juvenile idiopatic arthritis of National Rheabilitation Center (CNR) were included. For this analysis those > 16 years old were included. All of them were invited to fullfil a SF-36, BASFI, and HAQ.Di questionnairies. Descriptive analysis, correlations test, fisher exact and U Mann-Withney’s test were applied. We compared our group with non health services users from publication sources. RESULTS: In total, 30/60 patients were included in the analysys, 56% were female, mean age 27±7 years old and HAQ-DI 1.08 (range 0-3), 73% had >0.6 HAQ score (moderate-severe dishability), 90% had BASFI score >5 (severe dishability), 86% had any arthicular limitation and 48% had previous surgery. The most frequent was total hip replacement. Two groups were seperated into polyarthicular juvenile idiopatic arthritis (60%) and oligoarthicular juvenile idiopatic arthritis (AIJ and JAS respectively). Both groups had functional and quality of life index significatively affected (p=0.000). There were no differences between SF-36 affected dimensions in both groups. CONCLUSIONS: Although physical health related QOL was worse in patients with PAIJ, patients with PAIJ and JAS experienced limitations in physical role functioning, and both groups had worse QOL scores (specially Emotional Role, Social Functioning and General Health Perception) than controls.