sympathicotonia

[sĭm-păth′ĭ-kō-tōnē-ə]
n.
  1. A condition in which there is increased tonicity of the sympathetic nervous system, marked by vascular spasm and high blood pressure.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.