Typhus
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== Symptoms == | == Symptoms == | ||
| - | Symptoms of epidemic typhus usually set in within 12 days after infection and include high fever (can reach 102°F/39°C), severe headache, muscle pain, chills, abnormally low blood pressure (hypotension), stupor, light sensitivity (photophobia), and delirium. In at least 50% of cases, a rash appears on the patient's chest five days after the fever begins, and will spead to the | + | Symptoms of epidemic typhus usually set in within 12 days after infection and include high fever (can reach 102°F/39°C), severe headache, muscle pain, chills, abnormally low blood pressure (hypotension), stupor, light sensitivity (photophobia), and delirium. In at least 50% of cases, a rash appears on the patient's chest five days after the fever begins, and will spead to the rest of the body, excluding the palms, soles, and face. The fever usually lasts two weeks. Serious cases can result in vascular collapse, kidney failure, severe bruising and gangrene, encephalitis, or pneumonia. Fatality rates without antibiotic treatment average from 10 to 40%, with the likelihood of mortality increasing with age. |
== Etymology == | == Etymology == | ||
Revision as of 06:06, 2 October 2007
Epidemic typhus, or gaol fever, is the most severe form of the group of diseases that fall under the major heading of Typhus. The disease is caused by the bacteria Rickettsia prowazekii and is transmitted in the feces of the human body louse.
Symptoms
Symptoms of epidemic typhus usually set in within 12 days after infection and include high fever (can reach 102°F/39°C), severe headache, muscle pain, chills, abnormally low blood pressure (hypotension), stupor, light sensitivity (photophobia), and delirium. In at least 50% of cases, a rash appears on the patient's chest five days after the fever begins, and will spead to the rest of the body, excluding the palms, soles, and face. The fever usually lasts two weeks. Serious cases can result in vascular collapse, kidney failure, severe bruising and gangrene, encephalitis, or pneumonia. Fatality rates without antibiotic treatment average from 10 to 40%, with the likelihood of mortality increasing with age.
Etymology
This form of the disease is called gaol fever, ship fever, and hospital fever due to its appearance in crowded conditions with insufficient hygiene that allow the lice to multiply and bite numerous victims. The disease also commonly appears after major natural disasters and war.
References
- "Typhus." Wikipedia, The Free Encyclopedia. 26 Sep 2007, 11:55 UTC. Wikimedia Foundation, Inc. 2 Oct 2007 <http://en.wikipedia.org/w/index.php?title=Typhus&oldid=160450718>.
- "Typhus Fever." Institute for International Cooperation in Animal Biologics. Jan 2004. Iowa State University College of Veterinary Medicine. 2 Oct 2007 <http://www.cfsph.iastate.edu/Factsheets/pdfs/typhus_fever.pdf>.
