Which complication is associated with Crohn's Disease?

Bowel obstruction is a common complication associated with Crohn's Disease due to the nature of the disease itself. Crohn's is characterized by inflammation that can lead to strictures and narrowing of the intestinal lumen. Over time, these strictures can cause blockages, resulting in a bowel obstruction. Patients with Crohn’s may also experience other complications such as fistulas, abscesses, and malnutrition due to the impact of the disease on the gastrointestinal tract.

While rectal bleeding can occur in Crohn's disease, it is more commonly associated with ulcerative colitis, especially in the context of more severe bleeding. Diverticulosis, on the other hand, is a separate condition characterized by the formation of pouches in the colon wall and is not directly a result of Crohn's disease. Pollakiuria, which refers to frequent urination, is not related to gastrointestinal complications but more often associated with urinary tract issues. Thus, the primary reason bowel obstruction is highlighted as the correct complication in this context is its strong association with the pathophysiology of Crohn’s disease.