Diarrhea. Diarrhea is one manifestation of GI disturbance. Symptoms may be acute if caused by such things as infections, drug reactions, alterations in diet, heavy metal poisoning, or fecal impaction. Chronic diarrhea is a symptom of GI diseases such as irritable bowel syndrome, lactase deficiency, cancer of the colon, inflammatory bowel disease, and malabsorption diseases. Chronic diarrhea may also be associated with GI surgery, radiation therapy, laxative abuse, alcohol abuse, and chemotherapeutic agents. When interventions are required to deal with diarrhea, they may include such things as alteration in tube feeding products and methods of administration, fluid replacement by oral rehydration procedures, a rapid return to feeding, and education aimed at the health information clients need to prevent or control the symptom of diarrhea. 