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"nervous exhaustion," 1854, medical Latin, from neur- (form of neuro- before a vowel) + asthenia "weakness" (see asthenia). Related: Neurasthenic.
neurasthenia neu·ras·the·ni·a (nur'əs-thē'nē-ə, nyur'-)n. A complex of symptoms characterized by chronic fatigue and weakness, loss of memory, and generalized aches and pains.