Neurasthenia

Neurasthenia is a term that was first used at least as early as 1829 to label a mechanical weakness of the actual nerves, rather than the more metaphorical "nerves" referred to by George Miller Beard later.

As a psychopathological term, neurasthenia was used by Beard in 1869 to denote a condition with symptoms of fatigue, anxiety, headache, heart palpitations, high blood pressure, neuralgia and depressed mood.