Intestinal diseases refer to a variety of conditions that affect the digestive system, particularly the intestines. These diseases can cause symptoms such as abdominal pain, diarrhea, constipation, and bloating. Common intestinal diseases include irritable bowel syndrome (IBS), Crohn's disease, and ulcerative colitis, which can lead to inflammation and discomfort. Diagnosis of intestinal diseases often involves medical history, physical examinations, and tests like endoscopy or colonoscopy. Treatment options may include dietary changes, medications, or in severe cases, surgery. Early detection and management are crucial for improving quality of life and preventing complications.