Gastrointestinal motor dysfunction, intestinal pseudo-obstruction syndromes, and hollow visceral neuropathy and myopathy were previously considered functional bowel diseases but are now recognized to be organic disorders.

Types

 digestive neuropathies
 digestive myopathies
 Cajal cell anomalies

References

 Mathias JR, Clench MH. Neuromuscular diseases of the gastrointestinal tract. Specific disorders that often get a nonspecific diagnosis. Postgrad Med. 1995 Mar;97(3):95-8, 101-2, 105-8. PMID: #7877932#