Question: Hi, I'm a med student currently in a pediatric rotation. I have this infant patient, where she came with vomitus, 1-2x/day, it happened 3 days earlier and after she ate. She has dehydration. She has flu too but it only happen in the evening, she has 38,4 degree celcius fever, and one day after being admitted to the hospital, she is having diarrhea, 3-5x/day, normal color, no blood, and not that watery. One week before admitted to this hospital, she was admitted in the other hospital with the fever of 39 degree of celcius and dehydration, having red spots appearing from her face to her whole body when the fever cooled down. Then she was discharged and then one day after her discharge, the vomiting started. Her current blood test indicated limfositosis, neutropenia and she has normal faeces test result. The doctor yesterday requested for an x ray, and it said that there is a chance that she might get TB so she does Mantoux text to her. The mantoux test result is not out yet. The baby has complete vaccination. My question is does she have acute diarrhea as her main diagnose? I am having difficulty diagnosing this disease. And why the doctor thinking there might be TB as her second diagnose?Thank you very much

Hi, thank you for your answer. But, what I would like to ask is that how to differentiate acute diarrhea symptoms with gastorenteritis?because I found them very similar and at first, I would like to diagnose it with gastroenteritis, but I find gastroenteritis is a very wide term and usually associated with diarrhea.