Symptoms of swine flu can be 2 or more of runny nose, cough, fever, chills, headaches, body aches, vomiting, nausea and diarrhea. Symptoms that should cause concern in children include the absence of interactivity and failure to be active as usual, difficulty in breathing, bluish skin, dizziness, diarrhea and high fever. In adults it can be confusion, high fever, breathing problems and abdominal pain