Hi ! Good morning. I am Dr Shareef answering your query. I am not aware if an intestinal mucosa biopsy was done during the endoscopy and colonoscopy or not, which was a must. If done, you did not mention the report of the biopsy. When all the tests mentioned by you came out to be normal, this compels me to think of possibility of coeliac disease/gluten sensitivity which goes very often unsuspected and missed, specially if your daughter was used to eat fried, oily, and fast food from outside. This is not easy to diagnose, and the best way is to exclude all kinds of fast food you consume in outside eating joints.Gluten sensitivity could give rise to all the symptoms you have described including your weight loss, abdominal pain, nausea, and over and above, low platelet count which might have resulted in the bruises. A platelet count and clotting profile is indicated in this case.It is usually not thought of and is under diagnosed. Also if you are from a developing country, tuberculosis not infrequently could give rise to such symptoms of your daughter. I suggest you to consult a gastro-enterologist along with a dietician on this aspect of the diagnosis, which possibly might not have been considered until now. The gastro-enterologist will be able to diagnose with few biochemical tests along with a possible repeat endoscopy with biopsy of the intestinal mucosal wall, while the dietician can guide you on your daughter s food that she can consume pleasantly. I hope this information would help you in discussing with your family physician/treating doctor in further management of your problem. Please do not hesitate to ask in case of any further doubts. Thanks for choosing health care magic to clear doubts on your health problems. I wish you an early recovery. Dr Shareef.