There can often be confusion around the distinction between Crohn’s disease and ulcerative colitis. This may be referred to as indeterminate colitis, especially if the inflammation and ulcerations are present in the colon and rectum, though without the typical penetrating features and skip lesions that patients with Crohn’s disease may have. When Crohn’s disease is present in the colon, this is referred to as Crohn’s colitis, NOT as someone having both ulcerative colitis and Crohn’s disease.
As such, in recent years, Crohn’s disease and ulcerative colitis (and the specific locations the disease presents in) are being referred to as a spectrum, or continuum, of inflammatory bowel diseases, rather than two separate diseases. Doctors are focusing more on the location of the disease and how it is presenting rather than categorizing the disease as specifically Crohn’s disease or ulcerative colitis