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Definition

A stupor is a state where one has a markedly reduced response to stimuli. The victim is still conscious and can make voluntary movements. Some synonyms include "being in a daze", "decreased consciousness", and "feeling lethargic".

Additional Info

Stupor has a number of causes - head injuries, a heart attack, infections, drugs etc. See the links under Further Reading for more exhaustive lists.

Stupor often precedes a state of unconsciousness or prostration. People in a stupor lack coordination and may injure themselves.

SDS Relevance

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This term usually appears on Section 10 (stability and reactivity) of a Safety Data Sheet as a symptom of over-exposure. Many chemical vapors can induce dizziness, light-headedness or stupor following inhalation. At higher concentrations, exposure can cause coma or death. It is important to recognize when you (or your coworkers) are becoming impaired from exposure to chemical vapors so you do not pass out before removing yourself to fresh air.

Stupor may also arise from skin exposure or ingestion. As always, read the Safety Data Sheets of the chemicals you work with so you know the symptoms of exposure and take proper precautions to avoid exposure in the first place.

Further Reading

• Stupor and Coma at the Merck Manuals Home Edition.
• Decreased alertness at the NIH's MedLinePlus Encyclopedia.
• Stupor causes and more at Healthline.com.
• Level of Consciousness from Clinical Methods: The History, Physical, and Laboratory Examinations. 3rd edition, courtesy of the NCBI Bookshelf.

See also: Carbon monoxide, coma, IDLH, prostration

Additional definitions from Google and OneLook.

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