nocebo
[ noh-see-boh ]
/ noʊˈsi boʊ /
noun
an inactive substance or a real medication that produces unpleasant or worsening symptoms in a patient or research participant because the person expects negative effects.
a negative symptom experienced by a person with such expectations.
Origin of nocebo
1960–65; Latin
nocēbō I shall be harmful; patterned after
placebo