Placebo drugs can relieve pain, particularly if people taking them are told how they work. Now it seems you don’t need detailed explanations to get the benefits
Source:
https://www.newscientist.com/article/2229542-the-psychology-behind-the-placebo-effect-just-got-stranger/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home