Leishmaniasis medical therapy: Difference between revisions

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==Medical Therapy==
==Medical Therapy==
*Treatment decisions should be individualized, with expert consultation.
*In general, all clinically manifest cases of visceral leishmaniasis and mucosal leishmaniasis should be treated, whereas not all cases of cutaneous leishmaniasis require treatment.
*The treatment approach depends in part on host and parasite factors.  
*The treatment approach depends in part on host and parasite factors.  
*Some approaches/regimens are effective only against certain Leishmania species/strains and only in particular geographic regions.  
*Some approaches/regimens are effective only against certain Leishmania species/strains and only in particular geographic regions.  

Revision as of 19:53, 29 December 2014

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Alejandro Lemor, M.D. [2]

Overview

Medical Therapy

  • The treatment approach depends in part on host and parasite factors.
  • Some approaches/regimens are effective only against certain Leishmania species/strains and only in particular geographic regions.
  • Even data from well-conducted clinical trials are not necessarily generalizable to other settings. Of particular note, data from the many clinical trials of therapy for visceral leishmaniasis in parts of India are not necessarily directly applicable to visceral leishmaniasis caused by L. donovani in other areas, to visceral leishmaniasis caused by other species, or to treatment of cutaneous and mucosal leishmaniasis.
  • Special groups (such as young children, elderly persons, pregnant/lactating women, and persons who are immunocompromised or who have other comorbidities) may need different medications or dosage regimens.

Cutaneous Leishmaniasis

Indications for Therapy in Cutaneous Leishmaniasis
Therapy of cutaneous leishmaniasis may be indicated to:
  • Decrease the risk for mucosal dissemination/disease (particularly for New World species in the Viannia subgenus)
  • Accelerate healing of the skin lesions
  • Decrease the risk for relapse (clinical reactivation) of the skin lesions
  • Decrease the local morbidity caused by large or persistent skin lesions, particularly those on the face or ears or near joints
  • Decrease the reservoir of infection in geographic areas where infected persons (vs. non-human animals) serve as reservoir hosts (such as in Kabul, Afghanistan, and other Leishmania tropica-endemic areas, where transmission is anthroponotic)
  • Decisions about whether and how to treat should be individualized.
  • The treatment approach depends in part on the Leishmania species/strain and the geographic area in which infection was acquired; the natural history of infection, the risk for mucosal dissemination/disease, and the drug susceptibilities in the pertinent setting; and the number, size, location, evolution, and other clinical characteristics of the patient's skin lesions.
  • In general, the first sign of a therapeutic response to adequate treatment is decreasing induration (lesion flattening).
  • The healing process for large, ulcerative lesions often continues after the end of therapy.
  • Relapse (clinical reactivation) typically is noticed first at the margin of the lesion.

▸ Click on the following categories to expand treatment regimens.[1]

Cutaneous Leishmaniasis

  ▸  Systemic Therapy (Parenteral)

  ▸  Systemic Therapy (Oral)

  ▸  Local Therapy

Systemic Therapy (Parenteral)
Preferred Regimen
Sodium stibogluconate 20 mg/kg IV/IM once daily for 10-20 days
OR
Meglumine antimoniate 20 mg/kg IV/IM once daily for 10-20 days
Alternative Regimen
Liposomal amphotericin B 3 mg/kg/day IV infusion for 6-10 days
OR
Pentamidine 2-3 mg/kg/day IV/IM for 4-7 days
† Data supporting the use of amphotericin B for treatment of cutaneous (and mucosal) leishmaniasis are anecdotal; standard dosage regimens have not been established.
‡ In the United States, pentamidine isethionate is uncommonly used for treatment of cutaneous leishmaniasis. Its limitations include the potential for irreversible toxicity and variable effectiveness.
Systemic Therapy (Oral)
Preferred Regimen
Patients that weight 33-44 kg:
Miltefosine 50 mg PO q12h for 28 days
Patients that weight >45 kg:
Miltefosine 50 mg PO q8h for 28 days
Alternative Regimen
Ketoconazole 600 mg daily for 28 days
OR
Fluconazole 200 mg daily for 6 weeks
†The FDA-approved indications are limited to infection caused by three particular species, all three of which are New World species in the Viannia subgenus—namely, Leishmania (V.) braziliensis, L. (V.) panamensis, and L. (V.) guyanensis.
‡ The "azoles" showed modest activity against some Leishmania species in some cases, but are not FDA approved
Local Therapy
List of possible local therapies
Cryotherapy (with liquid nitrogen)
Thermotherapy (use of localized current field radiofrequency heat)
Intralesional administration of SbV
Topical application of paromomycin (such as an ointment containing 15% paromomycin/12% methylbenzethonium chloride in soft white paraffin)
†To date, not covered by CDC's IND protocol for Pentostam®


Visceral Leishmaniasis

▸ Click on the following categories to expand treatment regimens.[1]

Visceral Leishmaniasis

  ▸  Systemic Therapy (Parenteral)

  ▸  Systemic Therapy (Oral)

Systemic Therapy (Parenteral)
Preferred Regimen
Liposomal amphotericin B 3 mg/kg/day IV for 5 days, then once on day 14 and once on day 21 (Total dose: 21 mg/kg)
OR
Sodium stibogluconate 20 mg/kg IV/IM once daily for 28 days
OR
Meglumine antimoniate 20 mg/kg IV/IM once daily for 28 days
Alternative Regimen
Amphotericin B deoxycholate 0.5-1 mg/kg IV once daily (Total dose: 15-20 mg/kg)
† In immunosuppressed patients, dose is 4 mg/kg/day for 5 days, then once on day 10, 17, 24, 31, and 38 (Total dose: 40 mg/kg)
Systemic Therapy (Oral)
Preferred Regimen
Patients that weight 33-44 kg:
Miltefosine 50 mg PO q12h for 28 days
Patients that weight >45 kg:
Miltefosine 50 mg PO q8h for 28 days

References

  1. 1.0 1.1 "CDC - Parasites - Leishmaniasis".


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