Journal of psychosomatic research
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Randomized Controlled Trial Comparative Study
Cognitive and emotional factors in placebo analgesia.
Information that a painkiller has been administrated induces an expectancy of reduced pain, and the expectancy has been shown to reduce pain. This is termed placebo analgesia. We hypothesized that an expectancy of reduced pain reduces stress. ⋯ Placebo analgesia is not related to stress and is influenced by the social context in which pain is recorded.