# Fatigue, lethargy, exhaustion?

**URL:** https://boards.straightdope.com/t/fatigue-lethargy-exhaustion/455746
**Category:** Factual Questions
**Created:** [July 8, 2008, 8:19pm UTC](https://boards.straightdope.com/t/fatigue-lethargy-exhaustion/455746 "2008-07-08T20:19:35Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![Sattua](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/sattua/32/11906_2.png) [@Sattua](https://boards.straightdope.com/u/Sattua)
#### Post date: [July 8, 2008, 8:19pm UTC](https://boards.straightdope.com/t/fatigue-lethargy-exhaustion/455746/1 "2008-07-08T20:19:35Z")

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Hey, medical-type Dopers. I’m trying to get straight the definitions of “fatigue”, “lethargy”, and “exhaustion”, medically speaking. Are they terms for basically the same thing, or are they medically distinct?