<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing severe stomach pain, nausea and vomiting, and diarrhea. I fear it might be an infectious gastroenteritis.  <response>: I see. In that case, we need to run some medical tests to confirm the diagnosis and identify the underlying cause. We will perform a complete blood count CBC, kidney function test, glucose measurement, electrolytes panel, and urinalysis. Additionally, you will require intravenous fluid replacement to prevent dehydration. 