Upper respiratory tract infections refer to infections occurring in parts such as the nasopharynx and throat. Clinically, symptoms often include sneezing, runny nose, sore throat, fever, headaches, and coughing. So, can upper respiratory tract infections cause vomiting? Yes, one reason is that sometimes upper respiratory infections can manifest as gastrointestinal-type symptoms including nausea, vomiting, abdominal pain, and diarrhea. Sometimes this is due to the pharyngeal reflex, which reflexively causes vomiting.