Symptoms
By Mayo Clinic staffSigns and symptoms of carbon monoxide poisoning may include:
- Dull headache
- Weakness
- Dizziness
- Nausea
- Vomiting
- Shortness of breath
- Confusion
- Blurred vision
- Loss of consciousness
Carbon monoxide poisoning can be especially dangerous for people who are sleeping or intoxicated. The fumes may be fatal before anyone realizes there's a problem.
When to see a doctor
If you suspect you've been exposed to carbon monoxide, get into fresh air immediately and seek emergency medical care. If possible, open windows and doors on the way out of the house.
- Aulakh SK. Carbon monoxide poisoning. In: Ferri FF. Ferri's Clinical Advisor 2012: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2012. http://www.mdconsult.com/books/about.do?about=true&eid=4-u1.0-B978-0-323-05611-3..C2009-0-38601-8--TOP&isbn=978-0-323-05611-3&uniqId=291436269-101. Accessed Jan. 19, 2012.
- Lavonas EJ. Carbon monoxide poisoning. In: Shannon MW, et al. Haddad and Winchester's Clinical Management of Poisoning and Drug Overdose. 4th ed. Philadelphia, Pa.: Saunders Elsevier; 2007. http://www.mdconsult.com/das/book/body/167411074-4/908443298/2045/92.html#4-u1.0-B978-0-7216-0693-4..50092-X_3027. Accessed Jan. 19, 2012.
- Carbon monoxide poisoning: Frequently asked questions. Centers for Disease Control and Prevention. http://www.cdc.gov/co/faqs.htm. Accessed Jan. 19, 2012.
- Carbon monoxide questions and answers. U.S. Consumer Product Safety Commission. http://www.cpsc.gov/cpscpub/pubs/466.html. Accessed Jan. 19, 2012.


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