IBD and Crohn's disease
can intensify in certain areas of the digestive tract. These focal points of disease are described as different "types" of Crohn's. Different areas of inflammation are sometimes, but not always, found in patterns, with a few distinct types. Crohn's disease can affect any portion of the digestive tract, in any pattern, with many types of manifestations.
With ileocolitis, the ileum (small intestine) and the colon have intensified inflammation. This type of concentration is considered the most common form of IBD and can cause symptoms of diarrhea, stomach pain, weight loss, and blood in the stool.
Ileitis is similar to ileocolitis but targets the small bowel's end portion, the terminal ileum. Like ileocolitis, this can cause abdominal pain, weight loss, fatigue, or fever. The symptoms of ileitis and ileocolitis are similar, as they both target the small intestine.
Gastroduodenal Crohn's disease
Gastroduodenal Crohn's disease refers to inflammation within the upper areas of the digestive tract. Gastroduodenal Crohn's disease
is considered to be a rare form (present in 5 percent of Crohn's cases) that affects the stomach, esophagus, and the duodenum