[医] 神
衰
,
尔德
病

neurasthenia
[ noun ]
nervous breakdown (not in technical use)
<noun.state> 
Neurasthenia \Neu*ras`the*ni"a\, n. [NL., fr. Gr. ney^ron nerve
+ ? weakness.] (Med.)
A condition of nervous debility supposed to be dependent upon
impairment in the functions of the spinal cord.