Inflammation of the lining of the intestinal wall causes Inflammatory Bowel Diseases (IBD) such as diverticulitis, ulcerative colitis, and Crohn’s disease. These diseases are painful and can cause acute diarrhea, fever, fatigue, reduced appetite, weight loss, and blood in the stools. To soothe the lining of the intestines, doctors often recommend following a low residue diet or a low fiber diet.