Neurasthenia is the old word for burnout syndrome.<p>They seems very closely related.<p>Compare, these:<p><a href="https://en.wikipedia.org/wiki/Neurasthenia#Contemporary_opinion" rel="nofollow">https://en.wikipedia.org/wiki/Neurasthenia#Contemporary_opin...</a><p><a href="https://www.mind-body-health.net/index.shtml" rel="nofollow">https://www.mind-body-health.net/index.shtml</a>