| 词条 | Active placebo |
| 释义 |
An active placebo is a placebo that produces noticeable side effects that may convince the person being treated that they are receiving a legitimate treatment, rather than an ineffective placebo. NomenclatureAccording to a 1965 paper,[1] the term "concealed placebo" (German: Kaschiertes Placebo) was suggested in a 1959 paper published in German.[2] ExampleA clear example is the 1964 work of Shader and colleagues who used a combination of low dose phenobarbital plus atropine to mimic the sedation and dry mouth produced by phenothiazines. Morphine and gabapentin are painkillers with the common side effects of sleepiness and dizziness. In a 2005 study assessing the effects of these painkillers on neuropathic pain, lorazepam was chosen as an active placebo because it is not a painkiller but it does cause sleepiness and can cause dizziness.[3]Testing from the late 1950s onwards on narcotic analgesics like morphine also has used dicyclomine as an active placebo, and on some occasions it was reported to cause the Straub mouse tail reaction, as do most narcotics. Clonidine is now finding more use as an active placebo for narcotics as well. ReferencesPhenobarbital and atropine in combination, an active control substance for phenothiazine research. Shader, R. I.; Cohler, J.; Elashoff, R.; Grinspoon, L. Journal of Psychiatric Research, Vol 2(3), 1964, 169-183. 1. ^{{cite journal |vauthors =Park LC, Covi U |title=Nonblind placebo trial: an exploration of neurotic patients' responses to placebo when its inert content is disclosed |journal=Archives of General Psychiatry |date=April 1965 |volume=12 |pages=336–45 |url=http://www.leecrandallparkmd.net/pdfs/placebo.pdf |pmid=14258363 |doi=10.1001/archpsyc.1965.01720340008002}} 2. ^{{cite journal |vauthors =Haas H, Fink H, Haertfelder G |trans-title=[The placebo problem] |language=German |title=Das Placeboproblem |journal=Fortschr Arzneimittclforsch |volume=1 |pages=279–454 |year=1959 |pmid=13710190}} 3. ^{{cite journal |url=http://content.nejm.org/cgi/content/short/352/13/1324 |volume=352 |pages=1324–34 |date=March 31, 2005 |issue=13 |vauthors =Gilron I, Bailey JM, Tu D, Holden RR, Weaver DF, Houlden RL |title=Morphine, gabapentin, or their combination for neuropathic pain |journal=N Engl J Med |pmid=15800228 |doi=10.1056/NEJMoa042580}} 2 : Medical terminology|Clinical research |
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