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[Polyesthesia--report of two cases].

H Koike1, Y Yoshino

  • 1First Department of Internal Medicine, Kyorin University School of Medicine.

Rinsho Shinkeigaku = Clinical Neurology
|February 1, 1990
PubMed
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Polyesthesia, a rare sensory disorder, causes one touch to feel like many. This study explores two cases, suggesting it may stem from nerve damage and regrowth after spinal cord injury.

Area of Science:

  • Neurology
  • Sensory Perception

Background:

  • Polyesthesia is a rare neurological phenomenon where a single stimulus evokes multiple sensations.
  • Understanding its underlying mechanisms is crucial for diagnosing and managing sensory processing disorders.

Observation:

  • Two cases of polyesthesia are presented: a 34-year-old male with SLE and transverse myelopathy, and a 70-year-old female with a history of syphilis.
  • The male patient experienced simultaneous sensations on his foot when his hand or trunk was rubbed, while the female patient reported a delayed sensation on her face after rubbing.

Findings:

  • The male patient's polyesthesia was elicited by rubbing, tapping, and vibration, but not by pinprick or temperature stimuli.
  • Somatosensory evoked potentials (SEPs) were abnormal in the male patient, suggesting spinal cord involvement.

Related Experiment Videos

  • Neuroradiological examinations were inconclusive in both cases.

    • Implications:

    • The findings suggest polyesthesia may result from denervation supersensitivity and axonal sprouting following spinal cord lesions.
    • This research contributes to understanding complex sensory alterations and their neurobiological basis.