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==Overview==
==Overview==
Antimicrobial therapy is indicated in trichomoniasis.  Most cases of trichomoniasis can be treated with [[Metronidazole]]. The symptoms of trichomoniasis in infected men may disappear within a few weeks without treatment. However, an infected man, even a man who has never had symptoms or whose symptoms have stopped, can continue to infect or re-infect a female partner until he has been treated. Therefore, both partners should be treated at the same time to eliminate the parasite. Individuals being treated for trichomoniasis should avoid sex until both they and their sex partners complete treatment and have no symptoms. Following successful treatment, individuals may still be susceptible to re-infection.
[[Antimicrobial]] therapy is the standard of care for trichomoniasis in both genders once the diagnosis has been confirmed. The symptoms of trichomoniasis among infected men may disappear within a few weeks even without treatment, but asymptomatic men may continue to be infectious and should therefore be treated. [[Antimicrobial]] therapy generally includes either [[metronidazole]] or [[tinidazole]] 2 g PO in a single dose. Prolonged therapy for 7 days is indicated among patients who fail to respond to the initial course of therapy. Following successful treatment, individuals may still be susceptible to re-infection.


==Medical Therapy==
==Medical Therapy==
[[Antimicrobial]] therapy is the standard of care for trichomoniasis in both genders once the diagnosis has been confirmed.<ref name="pmid15489348">{{cite journal| author=Cudmore SL, Delgaty KL, Hayward-McClelland SF, Petrin DP, Garber GE| title=Treatment of infections caused by metronidazole-resistant Trichomonas vaginalis. | journal=Clin Microbiol Rev | year= 2004 | volume= 17 | issue= 4 | pages= 783-93, table of contents | pmid=15489348 | doi=10.1128/CMR.17.4.783-793.2004 | pmc=523556 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=15489348  }} </ref><ref name="pmid23322080">{{cite journal| author=Coleman JS, Gaydos CA, Witter F| title=Trichomonas vaginalis vaginitis in obstetrics and gynecology practice: new concepts and controversies. | journal=Obstet Gynecol Surv | year= 2013 | volume= 68 | issue= 1 | pages= 43-50 | pmid=23322080 | doi=10.1097/OGX.0b013e318279fb7d | pmc=3586271 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23322080  }} </ref><ref name="Std"> http://www.cdc.gov/std/tg2015/trichomoniasis.htm, Accessed on September 13, 2016</ref> The symptoms of trichomoniasis in infected men may disappear within a few weeks even without treatment, but asymptomatic men may continue to be infectious and should therefore be treated.
===Antimicrobial Regimen===
===Antimicrobial Regimen===
:* 1. '''T. vaginalis infection in adults'''<ref>{{cite web | title =trichomoniasis | url =  http://www.cdc.gov/std/tg2015/trichomoniasis.htm  }}</ref>
 
::* Preferred regimen (1): [[Metronidazole]] 2 g PO in a single dose
:*1. '''''T. vaginalis'' infection in women'''
::* Preferred regimen (2): [[Tinidazole]] 2 g PO in a single dose
::*Preferred regimen:  [[Metronidazole]] 500  mg PO bid for 7 days
::* Alternative regimen: [[Metronidazole]] 500  mg PO bid for 7 days
::*Alternative regimen: [[Tinidazole]] 2 g PO in a single dose
:* 2. '''T. vaginalis infection in pregnant and lactating Women'''
::*Note: Patients should avoid sexual contact until they are fully cured of trichomoniasis
::* 2.1 '''Pregnant women'''
::*Note: Testing for other STIs, including [[HIV|HIV,]] [[syphilis]], [[gonorrhea]], and [[chlamydia]], should be performed for persons with ''T. vaginalis''.
:::* Preferred regimen: [[Metronidazole]] 2 g PO in a single dose
::
::* 2.2 '''Post-partum and Breastfeeding'''
::2. '''''T. vaginalis'' infection in men'''
:::* Preferred regimen (1): [[Metronidazole]] 2 g PO in a single dose
::* Preferred regimen: [[Metronidazole]] 2 g PO in a single dose
:::* Preferred regimen (2): [[Tinidazole]] 2 g PO in a single dose  
::* Alternative regimen: [[Tinidazole]] 2 g PO in a single dose
:::* Note (1): Do not breastfeed for 12-24 hrs following [[Metronidazole]] and 72 hrs following  [[Tinidazole]]
::* Note: Patients should avoid sexual contact until they are fully cured of trichomoniasis
:::* Note (2): Symptomatic pregnant women, regardless of pregnancy stage, should be tested and considered for treatment. Pregnant women should be advised of the risk and benefits to treatment as infection (definitely) and treatment (possibly)
::*Note: Testing for other STIs, including [[HIV|HIV,]] [[syphilis]], [[gonorrhea]], and [[chlamydia]], should be performed for persons with ''T. vaginalis''.
:::* Note (3): Pregnant women with HIV who are treated for T. vaginalis infection should be retested 3 months after treatment.
:*2. '''''T. vaginalis'' infection in pregnant and lactating Women'''
:* 3. '''T. vaginalis infection in patients with HIV'''
::*2.1 '''Pregnant women'''
::* Preferred regimen: [[Metronidazole]] 500  mg PO bid for 7 days
:::*Preferred regimen: [[Metronidazole]] 2 g PO in a single dose
:* 4. '''Persistent or recurrent trichomoniasis'''
::*2.2 '''Post-partum and Breastfeeding'''
::* 4.1 '''Treatment failure, first-time'''
:::*Preferred regimen (1): [[Metronidazole]] 500  mg PO bid for 7 days
:::* Preferred regimen: [[Metronidazole]] 500  mg PO bid for 7 days
:::*Preferred regimen (2): [[Tinidazole]] 2 g PO in a single dose
::* 4.2 '''Treatment failure, second-time'''
:::*Note (1): Do not breastfeed for 12-24 hrs following [[Metronidazole]] and 72 hrs following  [[Tinidazole]]
:::* Preferred regimen (1): [[Metronidazole]] 2 g PO for 7 days  
:::*Note (2): Symptomatic pregnant women, regardless of pregnancy stage, should be tested and considered for treatment.<ref>Trintis, J., et al. "Neonatal Trichomonas vaginalis infection: a case report and review of literature." International journal of STD & AIDS 21.8 (2010): 606-607.</ref> Pregnant women should be advised of the risk and benefits to treatment as infection (definitely) and treatment (possibly)
:::* Preferred regimen (2): [[Tinidazole]] 2 g PO for 7 days  
:::*Note (3): Pregnant women with HIV who are treated for T. vaginalis infection should be retested 3 months after treatment.
::* 4.3 '''Nitroimidazole-resistant cases'''
:*3. '''''T. vaginalis'' infection in patients with HIV'''
:::* Preferred regimen: [[Tinidazole]] 2-3 g PO for 14 days
::*Preferred regimen: [[Metronidazole]] 500  mg PO bid for 7 days
:*4. '''Persistent or recurrent trichomoniasis'''<ref name="urlwww.cdc.gov">{{cite web |url=https://www.cdc.gov/std/treatment-guidelines/STI-Guidelines-2021.pdf |title=www.cdc.gov |format= |work= |accessdate=}}</ref>
::*4.1 '''Treatment failure:'''
::**4.1.1 In a woman after completing a regimen and has been re-exposed to an untreated partner
::***Preferred regimen: [[Metronidazole]] 500  mg PO bid for 7 days
::**4.1.2 In a woman after completing a regimen and no re-exposure has occurred:
::***Preferred regimen (1): [[Metronidazole]] 2 g PO for 7 days
::***Preferred regimen (2): [[Tinidazole]] 2 g PO for 7 days
::**4.1.3 In men after completing a regimen and has been re-exposed to an untreated partner
::***Preferred regimen: [[Metronidazole]] single 2-g dose.
::**4.1.4 In men after completing a regimen and no re-exposure has occurred:
::**Preferred regimen (1): [[Metronidazole]] 500 mg PO BID for 7 days.
::*4.2 '''Nitroimidazole-resistant ''T. vaginalis'''''
::*Antibiotic susceptibility testing recommended
::*Preferred regimen: [[Tinidazole]] or [[metronidazole]]  2 g daily for 7 days
::*Alternative regimen (1):  high-dose oral [[tinidazole]] 2 g daily plus  [[tinidazole]] 500 mg BID intravaginal for 14 days
::*Alternative regimen (2): If the first failed, high-dose oral [[tinidazole]] 1 g TID plus [[paromomycin]] 4 g of 6.25% intravaginal [[paromomycin]] cream nightly for 14 days.
 
===Treatment of Sexual Partners===
 
*Sexual partners of patients with trichomoniasis should be treated.<ref name="Std"> http://www.cdc.gov/std/tg2015/trichomoniasis.htm, Accessed on September 13, 2016</ref><ref>Kissinger, Patricia, et al. "Patient-delivered partner treatment for Trichomonas vaginalis infection: a randomized controlled trial." Sexually transmitted diseases 33.7 (2006): 445-450.</ref>
*Patients and their sexual partners should avoid sexual contact until they are fully cured of trichomoniasis.
 
===Follow-up===
 
*Patients should be re-evaluated at the end of the [[antimicrobial]] therapy regimen to determine whether therapy has been successful.
*Patients should be instructed that they are still susceptible to re-infection.
*Retesting is recommended for sexually active women within 3 months of treatment for initial infection. If retesting at 3 months is not possible, clinicians should retest whenever persons next seek medical care <12 months after initial treatment. <ref>Van Der Pol, Barbara, et al. "Prevalence, incidence, natural history, and response to treatment of Trichomonas vaginalis infection among adolescent women." Journal of Infectious Diseases 192.12 (2005): 2039-2044.</ref>
*Data are insufficient to support retesting men after treatment.


==References==
==References==
{{Reflist|2}}
{{Reflist|2}}
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Latest revision as of 15:19, 17 September 2021

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Aysha Anwar, M.B.B.S[2] Nuha Al-Howthi, MD[3]

Overview

Antimicrobial therapy is the standard of care for trichomoniasis in both genders once the diagnosis has been confirmed. The symptoms of trichomoniasis among infected men may disappear within a few weeks even without treatment, but asymptomatic men may continue to be infectious and should therefore be treated. Antimicrobial therapy generally includes either metronidazole or tinidazole 2 g PO in a single dose. Prolonged therapy for 7 days is indicated among patients who fail to respond to the initial course of therapy. Following successful treatment, individuals may still be susceptible to re-infection.

Medical Therapy

Antimicrobial therapy is the standard of care for trichomoniasis in both genders once the diagnosis has been confirmed.[1][2][3] The symptoms of trichomoniasis in infected men may disappear within a few weeks even without treatment, but asymptomatic men may continue to be infectious and should therefore be treated.

Antimicrobial Regimen

  • 1. T. vaginalis infection in women
  • Preferred regimen: Metronidazole 500 mg PO bid for 7 days
  • Alternative regimen: Tinidazole 2 g PO in a single dose
  • Note: Patients should avoid sexual contact until they are fully cured of trichomoniasis
  • Note: Testing for other STIs, including HIV, syphilis, gonorrhea, and chlamydia, should be performed for persons with T. vaginalis.
2. T. vaginalis infection in men
  • Preferred regimen: Metronidazole 2 g PO in a single dose
  • Alternative regimen: Tinidazole 2 g PO in a single dose
  • Note: Patients should avoid sexual contact until they are fully cured of trichomoniasis
  • Note: Testing for other STIs, including HIV, syphilis, gonorrhea, and chlamydia, should be performed for persons with T. vaginalis.
  • 2. T. vaginalis infection in pregnant and lactating Women
  • 2.1 Pregnant women
  • 2.2 Post-partum and Breastfeeding
  • Preferred regimen (1): Metronidazole 500 mg PO bid for 7 days
  • Preferred regimen (2): Tinidazole 2 g PO in a single dose
  • Note (1): Do not breastfeed for 12-24 hrs following Metronidazole and 72 hrs following Tinidazole
  • Note (2): Symptomatic pregnant women, regardless of pregnancy stage, should be tested and considered for treatment.[4] Pregnant women should be advised of the risk and benefits to treatment as infection (definitely) and treatment (possibly)
  • Note (3): Pregnant women with HIV who are treated for T. vaginalis infection should be retested 3 months after treatment.
  • 3. T. vaginalis infection in patients with HIV
  • 4. Persistent or recurrent trichomoniasis[5]
  • 4.1 Treatment failure:
    • 4.1.1 In a woman after completing a regimen and has been re-exposed to an untreated partner
    • 4.1.2 In a woman after completing a regimen and no re-exposure has occurred:
    • 4.1.3 In men after completing a regimen and has been re-exposed to an untreated partner
    • 4.1.4 In men after completing a regimen and no re-exposure has occurred:
    • Preferred regimen (1): Metronidazole 500 mg PO BID for 7 days.
  • 4.2 Nitroimidazole-resistant T. vaginalis
  • Antibiotic susceptibility testing recommended
  • Preferred regimen: Tinidazole or metronidazole 2 g daily for 7 days
  • Alternative regimen (1): high-dose oral tinidazole 2 g daily plus tinidazole 500 mg BID intravaginal for 14 days
  • Alternative regimen (2): If the first failed, high-dose oral tinidazole 1 g TID plus paromomycin 4 g of 6.25% intravaginal paromomycin cream nightly for 14 days.

Treatment of Sexual Partners

  • Sexual partners of patients with trichomoniasis should be treated.[3][6]
  • Patients and their sexual partners should avoid sexual contact until they are fully cured of trichomoniasis.

Follow-up

  • Patients should be re-evaluated at the end of the antimicrobial therapy regimen to determine whether therapy has been successful.
  • Patients should be instructed that they are still susceptible to re-infection.
  • Retesting is recommended for sexually active women within 3 months of treatment for initial infection. If retesting at 3 months is not possible, clinicians should retest whenever persons next seek medical care <12 months after initial treatment. [7]
  • Data are insufficient to support retesting men after treatment.

References

  1. Cudmore SL, Delgaty KL, Hayward-McClelland SF, Petrin DP, Garber GE (2004). "Treatment of infections caused by metronidazole-resistant Trichomonas vaginalis". Clin Microbiol Rev. 17 (4): 783–93, table of contents. doi:10.1128/CMR.17.4.783-793.2004. PMC 523556. PMID 15489348.
  2. Coleman JS, Gaydos CA, Witter F (2013). "Trichomonas vaginalis vaginitis in obstetrics and gynecology practice: new concepts and controversies". Obstet Gynecol Surv. 68 (1): 43–50. doi:10.1097/OGX.0b013e318279fb7d. PMC 3586271. PMID 23322080.
  3. 3.0 3.1 http://www.cdc.gov/std/tg2015/trichomoniasis.htm, Accessed on September 13, 2016
  4. Trintis, J., et al. "Neonatal Trichomonas vaginalis infection: a case report and review of literature." International journal of STD & AIDS 21.8 (2010): 606-607.
  5. "www.cdc.gov" (PDF).
  6. Kissinger, Patricia, et al. "Patient-delivered partner treatment for Trichomonas vaginalis infection: a randomized controlled trial." Sexually transmitted diseases 33.7 (2006): 445-450.
  7. Van Der Pol, Barbara, et al. "Prevalence, incidence, natural history, and response to treatment of Trichomonas vaginalis infection among adolescent women." Journal of Infectious Diseases 192.12 (2005): 2039-2044.


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