A disorder referring to "tired nerves" and including symptoms of fatigue, anxiety, and various somatic complaints. Originated in the United States, but is no longer a part of the DSM classification system. A very common diagnosis in China.
(neu·ras·the·ni·a) NOUN: A psychological condition characterized by chronic fatigue and weakness, loss of memory, and generalized aches and pains, formerly thought to result from exhaustion of the nervous system. The term was introduced into psychiatry in 1869 by G. M. Beard, an American neurologist. Used by Sigmund Freud to describe a fundamental disorder in mental functioning, the term was incorrectly applied to almost any psychoneurosis. No longer in scientific use.
"weakness". This is an historic term used for persons with unexplained chronic fatigue and lassitude. Accompanying these symptoms were usually nervousness, irritation, anxiety, depression, headache, insomnia, and sexual disorders.
A category of mental disorder that is no longer in use. It described a condition with symptoms such as irritability, fatigue, weakness, anxiety, and localized pains without any apparant physical causes. It was thought to result from exhaustion of the nervous system.
Neurasthenia was a term first coined by George Miller Beard in 1869. Beard's definition of "neurasthenia" described a condition with symptoms of fatigue, anxiety, headache, impotence, neuralgia and depression. It was explained as being a result of exhaustion of the central nervous system's energy reserves, which Beard attributed to civilization.