Mental exhaustion generally refers to neurasthenia, the symptoms include 1, memory significantly reduced, easy to lose three, love to forget things, language performance ability is not as usual. 2, inattention, can not concentrate on completing the daily work, so that the efficiency of the work decreased significantly. 3, in the day-to-day life of the response to the stress of the slower, and the expression of the expression of the indifference. 4, often appear to be the manifestation of neurasthenia, there is insomnia dreamlessness. Especially due to insomnia and dreaminess after leading to mental depression. 5, sometimes may belong to the early manifestation of mental illness.