Development of Early Undifferentiated Spondyloarthritis FRESH-PEF60152-en COHORTE DESIR Development of Early Undifferentiated Spondyloarthritis DESIR FRESH-PEF60152-en 60152 FRESH-PEF60152 Maxime DOUGADOS ASSISTANCE PUBLIQUE HOPITAUX DE PARIS (AP-HP) Epidemiology France Portal (PEF) SOCIETE FRANÇAISE DE RHUMATOLOGIE INSTITUT NATIONAL DE LA SANTE ET DE LA RECHERCHE MEDICALE (INSERM) PFIZER (FRANCE) null Maxime;DOUGADOS Natural history predictive factors development progressive factors genetic factors ethnic and environmental factors human impact economic Rheumatology Behavioral determinants Environmental determinants: Climate Environmental determinants Environmental determinants: Other Biological determinants: Genetic predisposition Biological determinants 1) To study the natural history of early inflammatory back pain 2) To identify predictive factors for the development of spondyloarthritis and progressive factors of the disease, including genetic, ethnic and environmental factors 3) To study the human and economic impact of patients with early inflammatory back pain. null France Individuals General population Male Female Young Adult (19 to 24 years) Adult (25 to 44 years) Middle Aged (45 to 64 years) Men or women over 18 and under 50 years old, presenting early inflammatory back pain defined by: - pain in the buttock, lumbar or thoracic spine region; - fulfilling either the Calin or Berlin criteria or both; - symptom duration more than 3 months and less than 3 years. Symptoms suggestive of spondyloarthritis according to physician's assessment (score greater or equal to 5 on a 0 to 10 rating scale). Realisation of a prior medical examination. Informed consent dated and signed voluntarily. Clinical data Participant-reported health data Biological data Paraclinical data (non-biological) : Imaging Health event/mortality Health care consumption and services Other Through organizations (health services or institutions schools businesses etc.) [500-1000[ individuals Self-administered questionnaire Interview with the participant (including clinical) Observational Study Observational Study Cohort study 708 Unknown Restricted access Researchers from any country can submit a research project to the Cohort Scientific Committee. If the project is approved, cohort data will be made available whether it is the clinical database or biological material and/or imaging equipment. Access on specific project only