Gastrointestinal flu and common cold have certain differences. The so-called gastrointestinal flu, clinically, often involves some viruses infecting the respiratory tract, which causes patients to have not only upper respiratory symptoms such as nasal congestion, runny nose, sneezing, coughing, fever, and throat itchiness. These patients will also experience gastrointestinal discomforts like nausea, vomiting, abdominal distension, diarrhea, and a decrease in appetite. These symptoms indicate gastrointestinal flu. On the other hand, patients with a common cold typically exhibit only upper respiratory symptoms, such as nasal congestion, runny nose, sneezing, fever, throat itchiness, and coughing. Generally, a common cold does not accompany symptoms like abdominal distension, diarrhea, nausea, or vomiting.