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Cited by 490

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Relief of post-herpetic neuralgia with the Symbol receptor antagonist ketamine: A double-blind, cross-over comparison with morphine and placebo

Eide, Per Kristian, Jørum, Ellen, Stubhaug, Audun, Bremnes, Jørn, Breivik, Harald·1994·Pain

Abstract

Pain and sensory thresholds were examined before and after intravenous administration of ketamine (0.15 mg/kg), morphine (0.075 mg/kg) or saline in 8 patients with post-herpetic neuralgia. A randomized, double-blind, cross-over study design was used. Post-herpetic neuralgia was associated with impaired sensory function, as shown by reduced tactile and warm sensation in the affected compared with the contralateral non-affected skin area. Neither ketamine nor morphine changed significantly the thresholds for warm, cold, heat pain or tactile sensation. However, ketamine normalized abnormal heat pain sensations in 4 patients, probably due to a central effect. Ketamine, but not morphine, produced significant relief of pain. Pain evoked by non-noxious stimulation of the skin (allodynia) was significantly inhibited by ketamine as well as by morphine. Wind-up-like pain (i.e., pain evoked by repeatedly pricking the affected skin area) was significantly inhibited by ketamine, but significantly aggravated by morphine. Side effects were observed in all the 8 patients after injection of ketamine and in 6 patients after injection of morphine. The present results support the hypothesis that the N-methyl-D-aspartic acid (NMDA) receptors are involved in the control of post-herpetic neuralgia including allodynia and wind-up-like pain. The NMDA receptors also may play a role in the modulation of thermal perception.

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Metadata

Authors
Eide, P. K., Jørum, E., Stubhaug, A., Bremnes, J., & Breivik, H.
Venue
Pain
Published
1994-09
Volume
58
Issue
3
Pages
347-354
ISSN
0304-3959 (ISSN-L)
OpenAlex
W18184263
Cited by
490
References
2
FWCI
11.96
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Relief of post-herpetic neuralgia with the Symbol receptor antagonist ketamine: A double-blind, cross-over comparison with morphine and placebo. https://app.cochat.ai/papers/10.1016/0304-3959(94)90129-5
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Eide, P. K., Jørum, E., Stubhaug, A., Bremnes, J., & Breivik, H. (1994). Relief of post-herpetic neuralgia with the Symbol receptor antagonist ketamine: A double-blind, cross-over comparison with morphine and placebo. Pain. https://doi.org/10.1016/0304-3959(94)90129-5

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