Related Experiment Video
Updated: Jun 26, 2026

11:36
Cutaneous Leishmaniasis in the Dorsal Skin of Hamsters: a Useful Model for the Screening of Antileishmanial Drugs
Published on: April 21, 2012
Diffuse cutaneous leishmaniasis associated with the immune reconstitution inflammatory syndrome
Smeeta Sinha1, Geover Fernández, Rajendra Kapila
1Dermatology, Infectious Diseases and Pathology, New Jersey Medical School, Newark, New Jersey, USA.
International Journal of Dermatology
|January 8, 2009
Summary
Diffuse cutaneous leishmaniasis (DCL) is a rare HIV-associated infection. This case highlights DCL within immune reconstitution inflammatory syndrome (IRIS) in an AIDS patient on antiretroviral therapy.
Area of Science:
- Infectious Diseases
- Immunology
- Dermatology
Background:
- Leishmaniasis is an emerging opportunistic infection in individuals with HIV/AIDS.
- Visceral leishmaniasis is a recognized AIDS-defining illness.
- Diffuse cutaneous leishmaniasis (DCL) is a rare, anergic form characterized by nodules and high parasite load.
Observation:
- A case of DCL is presented in an AIDS patient.
- The DCL developed in the context of immune reconstitution inflammatory syndrome (IRIS).
- This occurred following the initiation of antiretroviral therapy.
Findings:
- The patient presented with numerous nonulcerating nodules and abundant parasites.
- Visceral involvement and a negative leishmanin skin test were noted.
- The condition followed a chronic course with incomplete treatment response and relapses.
Implications:
- Recognizing DCL is crucial in the growing population of immunocompromised patients.
- Understanding DCL within IRIS is important for effective management.
- This case underscores the evolving spectrum of leishmaniasis in HIV-infected individuals undergoing therapy.
Related Concept Videos
Leishmaniasis
Leishmaniasis is a protozoal disease caused by species of the genus Leishmania and transmitted through the bite of infected female sandflies. The parasite exists in two principal morphological forms during its life cycle. A sandfly acquires intracellular amastigotes from an infected reservoir host, such as a dog. Within the sandfly, these forms differentiate into motile, flagellated promastigotes. During a subsequent blood meal, promastigotes are injected into the human host, where they...
Antiprotozoal Agents
Leishmaniasis is a widespread parasitic disease caused by several Leishmania species. It affects millions of people each year and remains a major public health problem in endemic regions. First-line treatment relies on pentavalent antimonials, including meglumine antimoniate and sodium stibogluconate. Even so, how these drugs work has not been fully clear, especially their interaction with parasite-specific biochemical pathways. One key target is trypanothione reductase (TR), an enzyme that...
Immunodeficiency Diseases
Immunodeficiency disorders are conditions in which the immune system's ability to fight infectious disease and cancer is compromised or entirely absent. The immune system comprises a complex network of cells, tissues, and organs that work together to protect the body from potentially harmful invaders. When this system is deficient or not functioning properly, it leaves the body susceptible to infections, diseases, or other complications.
There are three main causes of immunodeficiency disorders...
There are three main causes of immunodeficiency disorders...
Rocky Mountain Spotted Fever
Rocky Mountain Spotted Fever (RMSF) is a severe tick-borne illness caused by Rickettsia rickettsii, a Gram-negative, coccobacillary bacterium. This pathogen is an obligate intracellular parasite, requiring a host cell for replication. Transmission occurs through the bite of an infected tick. In the United States, the most important vectors are Dermacentor variabilis (American dog tick) and Dermacentor andersoni (Rocky Mountain wood tick), though other tick species may also serve as vectors.
Cryptococcal Meningitis
Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Inflammatory Bowel Disease III: Crohn's Disease
Crohn’s disease is a chronic, relapsing form of inflammatory bowel disease characterized by segmental, transmural inflammation that can affect any part of the gastrointestinal tract. Its pathogenesis arises from a combination of genetic susceptibility, environmental exposures, epithelial barrier dysfunction, and immune dysregulation. Together, these factors lead to an exaggerated immune response against components of the gut microbiome.Genetic and Environmental InfluencesMultiple genetic...