Methods: Medical records will be reviewed to register the use of medication, flare ups (medical and surgical) and hospital admissions. Diagnosis, disease localization and behavior will be evaluated. At outpatient visits patients will get a clinical examination, blood and faeces will be collected to biobank and patients will be offered an endoscopical examination. The Montreal classification, The Harvey & Bradshaw's activity index (CD) and the SCAAI score (UC) will be used to describe disease localization, extent, behavior and severity. An electronic database will be established in use of processing data.