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Cutaneous field sti...
Cutaneous field stimulation (CFS) : A new powerful method to combat itch
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- Nilsson, Hans-Jörgen (author)
- Lund University,Lunds universitet,Neurofysiologi,Forskargrupper vid Lunds universitet,Neurophysiology,Lund University Research Groups
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- Levinsson, Anders (author)
- Lund University,Lunds universitet,Diagnostisk radiologi, Malmö,Forskargrupper vid Lunds universitet,Radiology Diagnostics, Malmö,Lund University Research Groups
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- Schouenborg, Jens (author)
- Lund University,Lunds universitet,Neurofysiologi,Forskargrupper vid Lunds universitet,Neurophysiology,Lund University Research Groups
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(creator_code:org_t)
- 1997
- 1997
- English 7 s.
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In: Pain. - 1872-6623. ; 71:1, s. 49-55
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http://dx.doi.org/10...
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Abstract
Subject headings
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- Scratching the skin, while instantly relieving itch, often aggravates itch over time due to skin injury. To relieve itch, without damaging the skin, a new technique termed cutaneous field stimulation (CFS) was developed and tested on 21 subjects. CFS uses a flexible plate with needle-like electrodes (n = 16) to electrically stimulate nerve fibres in the superficial skin. The electrodes were stimulated consecutively (4 Hz per electrode, pulse duration 1 ms, intensity 0.4-0.8 mA, 25 min). CFS resulted in a pricking and burning sensation that usually faded rather quickly. The burning sensation was still present during a selective block of impulse conduction in myelinated fibres indicating that nociceptive C-fibres are activated by CFS. Furthermore, a flare reaction developed around the CFS electrodes indicating activation of axon reflexes in nociceptive C-fibres. Itch, elicited by transdermal iontophoresis of histamine, was abolished within the skin area pre-treated with CFS, and was reduced to 14% of control 10 cm distally. Contralateral effects were small or non-existent. After 4 h, itch was reduced ipsilaterally to 32% of control. In comparison, 2 h after transcutaneous electrical nerve stimulation (TENS; 10-20 mA, 100 Hz, 25 min) ipsilateral itch was reduced to 56% of control. In conclusion, CFS offers a powerful new method for combating itch. It is suggested that CFS acts through endogenous central inhibitory mechanisms that are normally activated by scratching the skin.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Dermatologi och venereologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Dermatology and Venereal Diseases (hsv//eng)
Keyword
- Itch
- Pain
- Somatosensory
- Transcutaneous electrical nerve stimulation (TENS)
Publication and Content Type
- art (subject category)
- ref (subject category)
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