Leprosy: a primer for Canadian physicians

Andrea K Boggild1, Jay S Keystone, Kevin C Kain

  • 1Faculty of Medicine, University of Toronto, Toronto, Ont.

Insights

Leprosy, a serious infectious disease caused by Mycobacterium leprae, is increasingly recognized in North America due to immigration. Early diagnosis and multidrug therapy are crucial to prevent permanent nerve damage and transmission.

Area of Science:

  • Infectious Diseases
  • Dermatology
  • Neurology

Background:

  • Leprosy (caused by Mycobacterium leprae) is a rare but serious infectious disease.
  • While global prevalence decreases, immigration increases leprosy recognition in North America.
  • Clinical signs include skin macules and peripheral neuropathies, varying with disease spectrum.

Purpose of the Study:

  • To highlight the increasing recognition of leprosy in North America.
  • To describe leprosy presentation, including reactions and their impact.
  • To emphasize the importance of early diagnosis and treatment.

Main Methods:

  • Review of clinical manifestations of leprosy.
  • Discussion of leprosy reactions and their triggers.
  • Emphasis on diagnostic challenges and treatment outcomes.

Main Results:

  • Leprosy presents with diverse clinical manifestations, including skin lesions and neuropathies.
  • Leprosy reactions, acute inflammatory responses, exacerbate symptoms and nerve damage.
  • Prompt intervention for reactions is vital to improve quality of life.

Conclusions:

  • Early diagnosis and multidrug therapy are essential for leprosy cure.
  • Untreated leprosy can lead to irreversible nerve damage and transmission.
  • Recognizing and managing leprosy, including reactions, is crucial to minimize morbidity.

Related Concept Videos

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 I01:29

Pulmonary Tuberculosis I

Tuberculosis, often called TB, is a contagious illness primarily caused by Mycobacterium tuberculosis. It mainly affects the lung parenchyma but can also impact other body parts.
Causative Organism
The primary infectious agent causing tuberculosis is Mycobacterium tuberculosis, a slow-growing, acid-fast, aerobic rod that exhibits sensitivity to heat and ultraviolet light. Instances of Mycobacterium bovis and Mycobacterium avium contributing to the development of TB infection are rare.
Mode of...
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...
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:
Bacterial Meningitis I: Introduction01:22

Bacterial Meningitis I: Introduction

Bacterial meningitis is a severe, life-threatening inflammation of the meninges, particularly the pia mater and arachnoid mater, affecting the subarachnoid space, ventricles, and cerebrospinal fluid (CSF). If untreated, it can lead to significant neurological complications or death.Causative AgentsCommon pathogens vary with age and immune status. In adults, major organisms include Streptococcus pneumoniae, Neisseria meningitidis, and Haemophilus influenzae. Streptococcus agalactiae (group B...
Antiprotozoal Agents01:21

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...