"...The two primary sites for Crohn's disease are the ileum, which is the last portion of the small bowel (ileitis, regional enteritis), and the colon (Crohn's colitis)..."

"...Lactase deficiency, either ethnically acquired (more common in Asian-Americans, African- Americans) or secondary to acute infectious enteritis can lead to diarrhea following ingestion of milk, cheese, ice cream and other dairy products..."

"Enteritis means inflammation of the intestinal tract, especially of the small intestine..."

"...and fat malabsorption usually occurs after intestinal surgery or infection, but it can occur with chronic malabsorptive problems such as Crohn's disease, gluten sensitive enteropathy, and regional enteritis..."