 It is a kind of inflammatory bowel disease (IBD) along with Crohn's disease and microscopic colitis.Dietary changes, such as maintaining a high-calorie diet or lactose-free diet, may improve symptoms.Several medications are used to treat symptoms and bring about and maintain remission, including aminosalicylates such as mesalazine or sulfasalazine, steroids, immunosuppressants such as azathioprine, and biologic therapy.