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Expected Duration

Symptoms of diarrhea are usually most severe during the first 24 hours. Although some episodes of acute diarrhea last as long as 14 days, most go away within three to seven days.

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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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