Inclusion Criteria:  Patient whose age ≥ 18 years French-speaking patient Patient followed for Crohn's disease in one of the participating centers (gastroenterology or proctology departments of the Paris-Saint Joseph Hospital Group, gastroenterology department of the Louis Mourier Hospital). The diagnosis of Crohn's disease is based on clinical, endoscopic, radiological and histological criteria.  Exclusion Criteria:  Patient with a functional stoma Patient who objects to participation in the study Patient under guardianship or curatorship Patient deprived of liberty Patient under court protection