Health A-Z

Medical Content Created by the Faculty of the Harvard Medical School


When to Call A Doctor

If you have a chronic disease and suddenly get flu symptoms, call your doctor's office. You may benefit from starting an antiviral medication within 48 hours.

You also should notify your doctor if you have flulike symptoms along with:

  • Chest pain

  • Ear pain

  • Shortness of breath

  • Fever that does not go away

  • A cough that produces blood or thick, foul-smelling mucus

Page 7 of 9     Next Page:  Flu (Influenza) Prognosis
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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.

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