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J Clin Psychiatry. 1985 Jun;46(6):235-8.

Biochemical correlates of hypnoanalgesia in arthritic pain patients.


Self-reported levels of pain, anxiety, and depression, and plasma levels of beta-endorphin, epinephrine, norepinephrine, dopamine, and serotonin were measured in 19 arthritic pain patients before and after hypnosis designed to produce pain reduction. Correlations were found between levels of pain, anxiety, and depression. Anxiety and depression were negatively related to plasma norepinephrine levels. Dopamine levels were positively correlated with both depression and epinephrine levels and negatively correlated with levels of serotonin. Serotonin levels were positively correlated with levels of beta-endorphin and negatively correlated to epinephrine. Following hypnotherapy, there were clinically and statistically significant decreases in pain, anxiety, and depression and increases in beta-endorphin-like immunoreactive material.

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