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| | Gastroparesis |
 | | Gastroparesis is a syndrome characterized by the impaired transit of food from the stomach to the duodenum in the absence of mechanical obstruction. |
 | | Patients may be diagnosed with viral gastroparesis when they: are healthy subjects who experienced the acute onset of symptoms typical of a "viral-like" illness; experience persistent symptoms (nausea, vomiting, early satiety, weight loss) for longer than three months; and have no obstruction, metabolic disease, systemic illness, surgery, or use of antimotility medication. |
 | | Gastroparesis shows a strong female predominance, and menstrual cycles are important; in the week before menses, when progesterone levels are high, nausea and vomiting can be exacerbated. |
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