+The **nocebo effect** is a negative outcome from an inert treatment, driven by a patient's belief or expectation of harm. It is the dark mirror of the [Placebo Effect](/wiki/placebo_effect), where the anticipation of adverse effects can manifest real symptoms. This phenomenon underscores the mind's profound influence over the body, often intertwined with [Expectation Bias](/wiki/expectation_bias).
+## See also
+- [Placebo Effect](/wiki/placebo_effect)
+- [Mind-Body](/wiki/mind-body)
+- [Pain Perception](/wiki/pain_perception)
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