<unk>  is<unk>  that results from the activation of nociceptors of the thoracic, pelvic, or abdominal<unk> (organs).<unk>  structures are highly sensitive to distension (stretch), ischemia and inflammation, but relatively insensitive to other stimuli that normally evoke<unk>  such as cutting or burning.<unk>  is diffuse, difficult to localize and often referred to a distant, usually superficial, structure. It may be accompanied by symptoms such as nausea, vomiting, changes in vital signs as well as emotional manifestations. The<unk>  may be described as sickening, deep, squeezing, and dull. Distinct structural lesions or biochemical abnormalities explain this type of<unk>  in only a proportion of patients. These diseases are grouped under gastrointestinal neuromuscular diseases (GINMD). Others can experience occasional<unk> s, often very intense in nature, without any evidence of structural, biochemical or histolopathologic reason for such symptoms. These diseases are grouped under functional gastrointestinal disorders (FGID) and the pathophysiology and treatment can vary greatly from GINMD. The two major single entities among functional disorders of the gut are functional dyspepsia and irritable bowel syndrome.<unk>  hypersensitivity is hypersensitive<unk>  perception, which is commonly experienced by individuals with functional gastrointestinal disorders.
Visceral pain
Pain
Irritation
Tenderness 
Tickling
Food craving
Dryness 
Allodynia