Symptoms may be absent or trivial. Some patients may have severe ongoing attacks due to a blockage known as an intestinal pseudo-obstruction. Patients who develop bacterial overgrowth because of poor motility may develop diarrhea, while others may be constipated. Associated disorders of motility in other organs such as the esophagus, stomach and colon will produce other symptoms. Patients with severe dysmotility will develop malnutrition because they are unable to eat adequately.