<unk>  was a term first coined by George Miller Beard in 1869. Beard's definition of<unk> " described a condition with symptoms of fatigue, anxiety, headache, impotence, neuralgia and depression.
Americans were supposed to be particularly prone to<unk> , which resulted in the nickname "Americanitis" (popularized by William James).
Neurasthenia
Lambert-Eaton myasthenic syndrome
Multiple system atrophy
Progressive supranuclear palsy
Myasthenia gravis
Hyperkalaemic periodic paralysis
Nemaline myopathy
Centronuclear myopathy