and SpA may be found in 1- 12% of patients with Crohn`s Disease and Ulcerative Colitis, with higher incidence of peripheral arthritis; sacroiliitis may occur asymptomatic or with typical symptoms. Reactive arthritis tends to be more aggressive and as a longer duration in HLA-B*27 positive cases (50%). Asymmetrical acute peripheral arthritis, enthesitis, acute sacroiliitis, urogenital inflammation, and ocular manifestations are common and may last several months to two years. The importance of clinical measurements to evaluate pain, morning stiffness, and functional ability is well evaluated with the BASDAI and BASFI questionnaires. Several measurements may be used by the clinician, to check.
