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Penile thermal sensation

D Yarnitsky1, E Sprecher, Y Vardi

  • 1Department of Neurology, Institute of Clinical Neurophysiology, Rambam Medical Center and Technion Medical School, Haifa, Israel.

The Journal of Urology
|August 1, 1996
PubMed
Summary
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This study establishes reliable methods for measuring penile small fiber function using warm and cold sensory thresholds. These repeatable tests offer a new diagnostic tool for evaluating autonomic failure in men.

Area of Science:

  • Urology
  • Neurology
  • Sensory Physiology

Background:

  • Autonomic failure in the penis lacks direct measurement methods.
  • Current indirect techniques assess large nerve fiber function.
  • Micturition and potency rely on small peripheral nerve fibers.

Purpose of the Study:

  • To establish upper normal limits for penile warm and cold sensory thresholds.
  • To demonstrate the repeatability of these small fiber function tests.
  • To validate a new diagnostic tool for penile autonomic function.

Main Methods:

  • Measured penile warm and cold sensory thresholds in 35 healthy volunteers.
  • Utilized two distinct measurement methods (limits and levels).
  • Assessed inter-session repeatability over two separate testing periods.

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Main Results:

  • Provided upper normal values (95% confidence limits) for penile thermal thresholds.
  • Demonstrated high inter-session repeatability for both warm and cold threshold measurements.
  • Established normative data for small fiber mediated sensations on penile skin.

Conclusions:

  • Penile thermal sensory thresholds are repeatable and reliable.
  • These measurements serve as a valid diagnostic tool for somatic small fiber function.
  • Applicable for assessing patients with lower urinary tract disorders and potential autonomic dysfunction.