Impact of Air Pollution on the Course of Inflammatory Rheumatism

Inclusion Criteria

• •Patients with RA according to ACR/EULAR 2010 criteria, or spondyloarthritis according to ASAS criteria.
• •Patients older than 18 years of age
• •Patients with RA or spondyloarthritis considered stable (no change in background or biological therapy for at least 3 months) and in low activity (SAR 28 CRP \< 3.2 for RA and BASDAI \< 4 for 3 months).
• •Patient treated with biological therapy