Chronic idiopathic intestinal pseudo-obstruction (CIIP) is a rare, often fatal syndrome, caused by a heterogeneous group of enteric neuromuscular diseases that result in a severe abnormality of gastrointestinal motility. The typical clinical manifestation is characterized by recurrent episodes of abdominal pain, abdominal distension, and inability to defecate. CIIP is one of the most important causes of chronic intestinal failure both in pediatric and adult cases, since affected individuals are often unable to maintain normal body weight and/or normal oral nutrition. CIIP is generally sporadic, but familial forms have also been described. It has been reported that flamin A is mutated in X-linked chronic idiopathic intestinal pseudo-obstruction.
