acute stress disorder

A psychiatric disorder that occurs within a month after experiencing or witnessing a traumatic event, characterized by symptoms such as flashbacks or amnesia, problems with concentration and sleep, emotional numbness, and persistent negative mood.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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