Transcutaneous Electrical Neurostimulation in Functional Pain

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Abstract
Transcutaneous electrical neurostimulation (TENS) was applied to 15 nonsurgical low-back pain patients having diagnoses of functional pain, with 40% initially having significant pain relief (50% or greater). This pain-alleviating effect of TENS did not last longer than 2 mo. After initiation of neurostimulation, increased pain and/or bizarre and inappropriate sensations and behavior frequently developed. This modality was also applied in the diagnostic evaluation and treatment of 24 patients having diagnoses of postsurgical chronic intractable low-back pain of psychosomatic origin and achieved similar results. In both groups, a simplified poststimulation normal-saline-sterile-water intramuscular injection test was used to confirm the findings from transcutaneous electrical neurostimulation and to verify the functional basis of the present low-back pain.

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