[Current status of leprosy]

Patrice Bourée1, George-Yves de Carsalade

  • 1Faculté de médecine Paris-Sud, et institut Alfred-Fournier, 75014 Paris. patrice.bouree@bct.aphp.fr

La Revue Du Praticien
|July 31, 2012
PubMed

Insights

Leprosy, a chronic infectious disease caused by Mycobacterium leprae, presents a wide clinical spectrum due to immune response variations. Despite effective multidrug therapy, it remains a significant global health challenge.

Area of Science:

  • Infectious Diseases
  • Immunology
  • Dermatology

Context:

  • Leprosy, historically significant, is an infectious disease caused by Mycobacterium leprae, likely transmitted via nasal droplets.
  • The disease manifests a spectrum from tuberculoid to lepromatous forms, dictated by cell-mediated immune responses.
  • Chronic inflammation affects the skin and peripheral nerves, characteristic of leprosy.

Purpose:

  • To provide an overview of leprosy, including its cause, transmission, clinical presentation, and diagnosis.
  • To discuss existing classification systems for leprosy patients.
  • To highlight the persistent global health impact of leprosy despite available treatments.

Summary:

  • Leprosy is an infectious disease caused by Mycobacterium leprae, characterized by chronic inflammation of skin and nerves, with varied clinical presentations.
  • Diagnosis relies on clinical signs like anesthetic skin lesions and detection of acid-fast bacilli in skin smears.
  • Patient classification utilizes the Ridley scale and the World Health Organization's (WHO) paucibacillary/multibacillary field classification.

Impact:

  • Leprosy remains a significant global health problem, necessitating continued efforts in control and elimination.
  • Understanding the immune response variations is crucial for managing the disease spectrum.
  • Effective multidrug therapy exists, yet challenges in leprosy elimination persist worldwide.

Related Concept Videos

Pulmonary Tuberculosis III01:31

Pulmonary Tuberculosis III

Tuberculosis (TB) is a contagious infection primarily affecting the lung parenchyma but which can also affect other body parts. TB can be classified based on disease development, presentation, and the affected anatomical site.
The first classification is based on the development of the disease, and it includes the following categories:
Pulmonary Tuberculosis V01:28

Pulmonary Tuberculosis V

Medical management of tuberculosis (TB) patients involves a comprehensive approach that includes diagnosis, treatment, and monitoring. The specific strategies can vary depending on the type of tuberculosis (latent or active), the patient's overall health status, and other considerations.
Latent tuberculosis infection occurs when TB bacteria are present in a person's body, but are not causing illness or symptoms. It is not contagious, and preventive treatment is crucial to avoid the progression...
Pulmonary Tuberculosis II01:28

Pulmonary Tuberculosis II

Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
Here is a detailed explanation of its pathophysiology:
Transmission: The process begins when a person inhales droplet nuclei containing M. tuberculosis. These are typically released into the air when an individual with pulmonary or...
Investigation of Disease Outbreaks01:23

Investigation of Disease Outbreaks

Multistate foodborne outbreaks pose significant public health risks and require meticulous investigation to identify sources and implement control measures. The Centers for Disease Control and Prevention (CDC) utilizes a dynamic seven-step process for these investigations, integrating data from laboratories, interviews, and environmental assessments to protect public health.Outbreak Detection: The detection of multistate outbreaks typically begins with PulseNet, the CDC's national laboratory...
Stages of Infection01:26

Stages of Infection

Stages of infection describe what happens to a susceptible host once a pathogen invades the human body. The stages of infection are incubation, prodromal, illness, stage of decline, and convalescence. The incubation stage is the period from exposure to a pathogen until symptoms start. The infected person is unaware of impending illness as the pathogens grow and multiply within the body. The duration may vary depending on the type of infection. The incubation period of measles averages ten to...
Defense Against Bacterial Pathogens01:31

Defense Against Bacterial Pathogens

The human immune system is a complex network of cells, tissues, and organs that work together to defend the body against bacterial infections. It consists of various immune cells, each playing a specific role in the defense mechanism.
Phagocytes
Phagocytes are the frontline soldiers of the immune system. They include neutrophils and macrophages. Neutrophils are the most abundant type of white blood cell and are quickly mobilized to the site of infection. Macrophages are larger cells that patrol...