Paradoxical reaction

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Notion

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Science and technology

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What Wikipedia says

A paradoxical reaction (or paradoxical effect) is an effect of a chemical substance, such as a medical drug, that is opposite to what would usually be expected. An example of a paradoxical reaction is pain caused by a pain relief medication.

Excerpt from the Wikipedia article “Paradoxical reaction”, under the CC BY-SA 4.0 license. Read the article on Wikipedia