 2. Maintained inflammatory activity for more than 12 weeks defined by:Axial forms: BASDAI higher than or equal to 4 0-10 and at least one of the following parameters:. Global assessment of the disease by the patient higher than or equal to 4 On a scale 0-10. Spinal pain higher than or equal to 4 on a visual analogue scale VAS. Increase in erythrocyte sedimentation rate ESR andor CRP above the normality parameters established by the laboratory.Peripheral forms: Arthritis or enthesitis higher than or equal to 1 site and at least one of the following:. Global assessment of the disease by the patient higher than or equal to 4 on a scale 0-10. Increase in erythrocyte sedimentation rate ESR andor CRP above the normality parameters established by the laboratory 