Both inflammatory bowel disease and irritable bowel syndrome can cause lower bowel discomfort and pain, according to Mayo Clinic. Abdominal, bowel and pelvic pain also can be caused by colorectal cancer, states WebMD.
Irritable bowel syndrome occurs when the muscles in the gastrointestinal tract either contract too strongly or too weakly, leading to cramping and diarrhea or constipation, explains Mayo Clinic. Other symptoms include bloating, gas and mucus in the stool. If severe abdominal pain or rectal bleeding occurs, a doctor needs to be consulted. Otherwise, it's a chronic condition that can be treated with a healthy diet, regular exercise and plenty of water. An individual with extreme symptoms can take anti-diarrheal medications or fiber supplements to prevent loose stools or constipation respectively.
Inflammatory bowel disease occurs when the digestive tract is inflamed, resulting in abdominal and bowel pain, diarrhea, weight loss, fever and fatigue, says Mayo clinic. There are several manifestations of this disease including ulcerative colitis, collagenous colitis and Crohn's disease. Ulcerative colitis usually results in ulcers along the large intestine, while Crohn's disease can occur along any part of the digestive tract. Like irritable bowel syndrome, this is a chronic disease that can be managed with a high-fiber, low-fat and low-dairy diet.