• Patient with an established diagnosis of Crohn's disease, ulcerative colitis or IBD unclassified based on usual radiological, endoscopic or histological criteria.

• Patient aged 18 and older accepting to sign the informed participating consent form, stating that he accepts to provide personal details (mobile and home phone number, e-mail address), to complete the e-PRO as required and to be contacted by a Study Coordinator and his gastroenterologist for the purpose of the study during the entire study period and during follow up if required.