Symptoms of acute gastroenteritis due to norovirus infection primarily involve gastrointestinal dysfunction and infection. The onset is usually sudden and often occurs in crowded places and communal dining settings. Symptoms include nausea, vomiting, abdominal pain, and diarrhea, with diarrhea being a common symptom. Children frequently exhibit vomiting, while adults are more likely to experience abdominal pain and diarrhea. Severe diarrhea can lead to dehydration, thus it is important to promptly replenish fluids and electrolytes to correct gastrointestinal dysfunction.