One of the most common of all digestive problems, diarrhoea or loose motions refers to passing stools three or more times a day. These stools are usually uncontrollable, loose and watery. Sometimes, this condition can be accompanied by nausea, vomiting, cramping, abdominal pain and bloating as well. It is caused by bacteria, viruses or parasites, certain medicines, food intolerances and diseases that affect the stomach, small intestine or colon.