What should I do if I have persistent stomach pain and nausea after getting the flu?

Stomach pain and nausea following influenza B infection may result from gastrointestinal symptoms caused by the influenza virus or from the systemic inflammatory response triggered by the flu. Influenza not only affects the respiratory tract but can also impact the gastrointestinal system, particularly in children. Abdominal pain and nausea may arise directly from viral infection of the gastrointestinal tract or indirectly due to dehydration, fever, and general malaise associated with influenza. Additionally, taking certain influenza medications—such as antiviral drugs or antipyretic analgesics—may cause stomach discomfort or nausea as side effects. If these symptoms are severe or persist, it is advisable to consult a doctor promptly to rule out other potential causes and obtain appropriate treatment recommendations. Maintaining adequate fluid intake and getting sufficient rest typically help alleviate these symptoms.