AI Article Synopsis
- This study explored how hypnosis affects pain levels and a specific brain reflex in women with temporomandibular disorder.
- Patients were divided into two groups: one receiving hypnosis and the other undergoing nonhypnotic relaxation.
- Results showed that hypnosis significantly reduced reported pain levels without major changes in the brain reflexes, suggesting that hypnosis may work through higher brain processes rather than basic reflex pathways.
Article Abstract
Objective: This study contrasted the effect of hypnosis on self-reported pain and changes in a nociceptive brainstem reflex, the blink reflex (BR), in 39 women with temporomandibular disorder.
Methods: The patients were randomized to hypnosis or control (nonhypnotic relaxation). Pain intensity was assessed 3 times daily on a 0 to 10 numerical rating scale. BRs were elicited by electrical stimulation with a nociceptive-specific electrode and recorded before and after treatment at pain threshold (Ip) and supra threshold (2×Ip).
Results: Significant reduction of pain intensity was observed in the hypnosis group from 4.5±2.1 at baseline to 2.9±2.4 after treatment (P<0.001). The pain reduction was generally unrelated to changes in the BR, with the exception being a lowered ipsilateral R2 BR component at the right side supra threshold (P=0.034).
Conclusions: Hypnosis thus seems to reduce complex temporomandibular disorder pain, most likely because of cortical changes with little, if any, involvement of brainstem reflex pathways.
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| http://dx.doi.org/10.1097/AJP.0b013e3181ffbfcb | DOI Listing |
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