What van cause constant diarrhea and sharp pains in the abdomen that can last for many years. i've had a high wbc for a while too?

See doctor: You may have a chronic infection in your bowels. You could also have inflammatory bowel disease or irritable bowel syndrome. I would suggest discussing this with your doctor.

Diarrhea: Hi you need to be tested for intestinal parasites if negative blood work for celiac disease and inflammatory bowel disease should be performed a colonoscopy should also be entertained depending on the results of the above tests.