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Reference.org
Stupor
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<p>Stupor is the lack of critical mental function and a <a href="/facts/Level_of_consciousness/bzGqcsUV">level of consciousness</a>, in which an affected person is almost entirely unresponsive and responds only to intense stimuli such as <a href="/facts/Pain/70E79oUn">pain</a>. The word derives from the <a href="/facts/Latin/pM3Kge85">Latin</a> <i>stupor</i> ("numbness, insensibility"). </p>