Question: what does it mean when you are vomiting and have diarrhea at the same time?
Answer: Causes of vomiting and diarrhea at the same time. Vomiting and diarrhea can happen at the same time for a number of reasons. A stomach virus or bacterial gastrointestinal (GI) infection is the most likely cause in children. The gastrointestinal tract is part of the digestive system.