cardiasthenia


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cardiasthenia

[kar′dē·asthē′nē·ə]
Etymology: Gk, kardia, heart, a, without, sthenos, strength
a form of neurasthenia in which cardiovascular symptoms are prominent.

orthostatic intolerance

A condition (OMIM:604715) characterised by lightheadedness, fatigue, altered mentation, syncope and tachycardia upon assuming an upright position, and markedly elevated serum norepinephrine. 

Molecular pathology
Defects in SLC6A2, which encodes a member of the sodium:neurotransmitter symporter that regulates norepinephrine homeostasis, are a cause of orthostatic intolerance.

cardiasthenia

(kăr″dē-ăs-thē′nē-ă) [″ + astheneia, weakness]
An obsolete term for a somatization disorder with prominent cardiac symptoms.