| ICD9 = | MeshID = D009440 | }} Neurasthenia's a psycho-pathological term first used by George Miller Beard in 1869 to denote a condition with symptoms of fatigue, anxiety, headache, impotence, neuralgia and depressed mood. It's currently a diagnosis in the World Health Organisation's International Classification of Diseases, and in the Chinese Classification of Mental Disorders under the translation 'shenjing shuairuo'. Americans were supposed to be particularly prone to neurasthenia, which r… (More on Neurasthenia)