Nutritional issues regarding Crohn's disease, Ulcerative colitis, IBS, and Inflammatory Bowel Diseases. (IBD) I highly recommend patients with chronic inflammatory bowel disease avoid industrialized and processed foods.
Sausage may be delicious, but it is usually one of the most processed foods. Ketchup and mayonnaise also often undergo processing that impairs nutritional values. Although you did not mention that you drink a soft drink with the sausage (I guess), it is a considerable load of industrialized and processed foods unsuitable for patients with chronic bowel diseases. It is a highly inflammatory food that causes cumulative health damage.
Link: Classification into industrialized, processed food and beverages.
https://www.sf-healing.com/page/218 (Copy & Paste)