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Functional constipation has been treated with a variety of 5-hydroxytryptamine 4 (5-HT4) agonists. [13] Serotonin (5-HT) is an enteric and central neurotransmitter that binds to the gut's 5-HT4 receptors to boost acetylcholine release, which in turn increases secretion and motility of the gut. [ 18 ]
Obstructed defecation syndrome (abbreviated as ODS, with many synonymous terms) is a major cause of functional constipation (primary constipation), [18] of which it is considered a subtype. [19] It is characterized by difficult and/or incomplete emptying of the rectum with or without an actual reduction in the number of bowel movements per week ...
Where anismus causes constipation, it is an example of functional constipation. Many authors describe an "obstructed defecation syndrome", of which anismus is a cause. [24] The Rome II classification functional defecation disorders were divided into 3 types, [25] however the symptoms the patient experiences are identical. [26]
Functional gastrointestinal disorders (FGID), also known as disorders of gut–brain interaction, include a number of separate idiopathic disorders which affect different parts of the gastrointestinal tract and involve visceral hypersensitivity and motility disturbances.
Constipation is the most common chronic gastrointestinal disorder in adults. Depending on the definition employed, it occurs in 2% to 20% of the population. [18] [58] It is more common in women, the elderly and children. [58] Specifically constipation with no known cause affects females more often affected than males. [59]
Intestinal pseudo-obstruction (IPO) is a clinical syndrome caused by severe impairment in the ability of the intestines to push food through. It is characterized by the signs and symptoms of intestinal obstruction without any lesion in the intestinal lumen. [1]
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Bowel obstruction, also known as intestinal obstruction, is a mechanical or functional obstruction of the intestines which prevents the normal movement of the products of digestion. [2] [5] Either the small bowel or large bowel may be affected. [1] Signs and symptoms include abdominal pain, vomiting, bloating and not passing gas. [1]