Patient with psoriatic arthritis according to the CASPAR 2006 classification, followed at the CHU Amiens-Picardie.
For the "control" group:
Individuals over 18 years of age
Individual affiliated to a social security scheme
Individual having agreed to participate in the study
Individuals with no inflammatory or autoimmune diseases
You may not be if
Patient or control not understanding French
Patient not included in the Amiens Picardie University Hospital's "Psoriatic Rheumatism" cohort, or control not included in the Amiens Picardie University Hospital's bone marrow donor cohort.
Patient or control objecting to participation in the study
