The purpose of this study is to prospectively evaluate a scoring system to predict a mild course of disease in patients newly diagnosed with Crohn's disease.

Inclusion Criteria:

All patients with Crohn's disease who

• have been newly diagnosed (initial diagnosis not more than 6 weeks previously) and
• are as yet untreated (permitted medications are a maximum of 10 days of 5-aminosalicylates (5-ASA) or glucocorticosteroids and antibiotics for non-intestinal indications) and
• have consented to the documentation of their patient data and
• agree to the up to 5-year documentation of the course of disease

Exclusion Criteria:

• Pre-treatment with 5-ASA > 10 days
• Treatment with steroids > 10 days
• Treatment with antibiotics, immunosuppressants or biological agents > 10 days

Specialist gastroenterological centres