Health A-Z

Medical Content Created by the Faculty of the
Harvard Medical School

0SHARES

Expected Duration

Typically, hair loss begins two to four months after the event that triggered the problem, and lasts approximately six months. New hairs begin growing immediately after the hair falls out, but significant growth may not be noticed for several months.

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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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