Crohn's disease (CD) is an incurable chronic inflammatory disorder of the gastrointestinal tract. This study will evaluate the second line effectiveness of upadacitinib and risankizumab in Crohn's Disease (CD) in a real-world setting. Upadacitinib and risankizumab are approved drugs for treating CD. Approximately 250 participants who are prescribed upadacitinib or risankizumab by their physician in accordance with local label will be enrolled in 25 sites across Italy. Participants will receive upadacitinib or risankizumab as prescribed by their physician according to their routine clinical practice and local label. Participants will be followed for up to 18 months. No additional burden for participants in this trial is expected.