Placebo

The placebo effect is related to expectations

A quack treating a patient with Perkins Patent Tractors by James Gillray, 1801. John Haygarth used this remedy to illustrate the power of the placebo effect.

A placebo (/pləˈsiːboʊ/ plə-SEE-boh; Latin placēbō, "I shall please" from placeō, "I please") is a simulated or otherwise medically ineffectual treatment for a disease or other medical condition intended to deceive the recipient. Sometimes patients given a placebo treatment will have a perceived or actual improvement in a medical condition, a phenomenon commonly called the placebo effect or placebo response. The placebo effect consists of several different effects woven together, and the methods of placebo administration may be as important as the administration itself.

单词	Sham treatment
释义	Sham treatment 英语百科 Placebo A placebo (/pləˈsiːboʊ/ plə-SEE-boh; Latin placēbō, "I shall please" from placeō, "I please") is a simulated or otherwise medically ineffectual treatment for a disease or other medical condition intended to deceive the recipient. Sometimes patients given a placebo treatment will have a perceived or actual improvement in a medical condition, a phenomenon commonly called the placebo effect or placebo response. The placebo effect consists of several different effects woven together, and the methods of placebo administration may be as important as the administration itself.
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Sham treatment

Placebo