Technically, it is known as the enteric nervous system, or ENS, but it has been given other labels, too: "second brain," (2) "abdominal brain," "other brain," and "back-up brain." Its neurologic disorders include abdominal epilepsy
, abdominal migraine, and autism with intestinal symptoms, such as chronic enterocolitis.
The periodicity of attacks, with or without hypertension, may lead to confusion and give the impression of porphyria, pheochromocytoma, abdominal epilepsy
, intermittent small bowel obstruction, or endometriosis.