Neurasthenia

from WordNet (r) 3.0 (2006)

neurasthenia
    n 1: nervous breakdown (not in technical use)

from The Collaborative International Dictionary of English v.0.48

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.
   [1913 Webster]