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A mental disorder characterized by chronic fatigue and concomitant physiologic symptoms.

Nerve exhaustion or prostration.

Neurasthenic.

Nervous exhaustion, Beard's disease, a functional neurosis marked by intense nervous irritability and weakness; the chief symptoms are insomnia, headache, or feelings of constriction about the head, pain in the back, exhaustion after slight mental or physical exertion, excessive sensibility to noises, irregular heart action, vertigo, dyspepsia, disorders of vision, and loss of memory.

Debility of the nervous system.

See Irritable.

Depression due to exhausted nerve-energy.

Nervous exhaustion (or prostration, or debility); a condition appearing in the early and middle periods of adult life, presenting objective symptoms of deranged function of the nervous system, [Gr.]