Which disorder involves inflammation of parts of the digestive tract and is associated with ulcers that cause pain and diarrhea?

Crohn's disease is a chronic inflammatory bowel disease that primarily affects the digestive tract, most commonly the ileum (the last part of the small intestine) but can occur anywhere from the mouth to the anus. The inflammation in Crohn's disease can cause a variety of symptoms, most notably abdominal pain and diarrhea, which may be persistent or debilitating.

Furthermore, this condition is known for forming ulcers in the gastrointestinal tract, leading to complications such as bowel obstruction or fistulas. The exact cause of Crohn's disease is not entirely understood, but it is believed to involve a combination of genetic, environmental, and immune system factors. In contrast, disorders like GERD primarily affect the esophagus, lactose intolerance is a digestive issue related to sugar absorption, and hepatitis refers specifically to liver inflammation. Therefore, the specific symptoms associated with Crohn's disease distinctly align with the question's focus on inflammation of the digestive tract along with ulceration.