. "A placebo (/pl\u0259\u02C8sibo\u028A/ pl\u0259-SEE-boh; Latin plac\u0113b\u014D, \"I shall please\" from place\u014D, \"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."@en . . .