Hi. Thanks for your query. Noted the history about your wife and understood the concerns. Chilly chicken with fried rice at Chinese restaurant can cause colitis as there are no loose stool that you have mentioned. Nor she has fever, nausea, vomiting or bloating. Hence the most probable cause is colitis may be due to amebiasis or so. I would advise her the following in such a situation: Get the stool tests done. Blood tests for CBC, liver and kidney functions. Ultrasonography of abdomen. A course of antibiotic, metronidazole as per the reports and antispasmodics to relieve pain should help her out. Also ask her to take plenty of oral fluids, water, homemade foods only, to avoid dehydration and electrolyte balance. Give her probiotics, curd and bananas.