Editing Pyrethrin (section)

=== {{anchor|Pyrethrum}} Pyrethrum toxicity===
Exposure to pyrethrum, the crude form of pyrethrin,<ref name="EPA review"/> causes harmful health effects for mammals. Pyrethrum also has an allergenic effect that commercial pyrethroids don't have.<ref name="EPA review">{{cite web |title=Review of the Relationship between Pyrethrins, Pyrethroid Exposure and Asthma and Allergies |publisher=US Environmental Protection Agency Office of Pesticide Programs |date=Sep 2009 |url=http://www.epa.gov/oppsrrd1/reevaluation/paw-factsheet.html}}</ref>
In mammals, toxic exposure to pyrethrum can lead to tongue and lip numbness, [[drooling]], [[lethargy]], muscle [[tremor]]s, [[respiratory failure]], [[vomiting]], [[diarrhea]], seizures, [[paralysis]], and [[death]].<ref name="Pyrethrins 1994">{{cite web |title=Pyrethrins |url=http://extoxnet.orst.edu/pips/pyrethri.htm |publisher=Extension Toxicology Network |year=1996}}</ref>
Exposure to pyrethrum in high levels in humans may cause symptoms such as asthmatic breathing, sneezing, nasal stuffiness, headache, nausea, loss of coordination, tremors, convulsions, facial flushing, and swelling.<ref>Occupational Health Services, Inc. "Pyrethrum." Material Safety Data Sheet. 1 April 1987. New York: OHS, Inc.</ref>{{unreliable source?|should reference a more recent date|date=April 2015}} A possibility of damage to the immune system exists that leads to a worsening of allergies following toxicity.<ref name="Pyrethrins 1994"/> Infants are unable to resourcefully break down pyrethrum due to the ease of skin penetration, causing similar symptoms as adults, but with an increased risk of death.<ref>{{cite web |title=Public Health Statement for Pyrethrins and Pyrethroids |url=https://wwwn.cdc.gov/TSP/PHS/PHSLanding.aspx?id=785&tid=153 |publisher=Agency for Toxic Substances & Disease Registry |date=Sep 2003}}</ref>