You already know about fevers, chills and coughs, but this issue may also occur with a flu B infection. Fever, headache, cough, runny nose — these are all symptoms we typically associate with influenza . However, sometimes, an unexpected and unusual symptom can pop up when infected with flu B: an itchy, red rash. My 8-year-old son was recently diagnosed with flu B after he developed a fever and other typical flu symptoms. But he also had a bumpy rash all over his back and arms, which his doctor