nocebo

[ noh-see-boh ]

noun

1. 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. Compare placebo ( def 1 ).
2. a negative symptom experienced by a person with such expectations.

Word History and Origins

Origin of nocebo¹

1960–65; Latin nocēbō “I shall be harmful”; patterned after placebo

Example Sentences

If someone feels ignored or belittled, they may experience a nocebo effect.

From Science News For Students

People also reported higher pain intensity on the “capsaicin” skin, an expected nocebo effect.

From Science News

Brain stimulation affected neural pathways that were already thought to be involved in the placebo and nocebo effects.

From Science News