Abstract
Hanseniasis is a systemic, infectious disease whose etiologic agent (Mycobacterium leprae or Hansen’s bacillus) has a predilection and primarily affects the skin and peripheral nerves. It presents chronic evolution that can be interrupted by acute episodes known as hansenic reaction. Diagnosis is mainly clinical, based on a good anamnesis and physical examination of the skin and nerve trunks. The multidrug therapy, as it is known today, was first oriented by WHO in 1982 and it is a combination of three (rifampicin, dapsone, and clofazimine) drugs that are safe and effective in treating hanseniasis and to prevent the emergence of drug resistance. If untreated, the disease can progress to other organs and can cause nerve damage, leading to muscle weakness and atrophy, and permanent physical disabilities and deformities proper to the disease. These deformities are responsible by the stigma and prejudice against people affected by hanseniasis. Prevention of disabilities begins with diagnosing hanseniasis sufficiently early, treating with multidrug therapy, recognizing and treating reactions and neuritis. It is a compulsory reporting disease worldwide.
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Abbreviations
- BCG:
-
Bacillus Calmette-Guérin
- COVID-19:
-
Coronavirus Disease 2019
- DH:
-
Dimorphous hanseniasis
- ENH:
-
Erythema Nodosum Hansenic
- H&E:
-
Hematoxylin and eosin
- IgM:
-
Immunoglobulin M
- IH:
-
Indeterminate hanseniasis
- ILA:
-
International Leprosy Association
- MB:
-
Multibacillary
- MDT:
-
Multidrug therapy
- PB:
-
Paucibacillary
- PGl-1:
-
Phenolic glycolipid-1
- SARS-CoV-2:
-
Severe Acute Respiratory Syndrome Coronavirus 2
- SDR:
-
Single dose of rifampicin
- TH:
-
Tuberculoid hanseniasis
- VH:
-
Virchowian hanseniasis
- WHO:
-
World Health Organization
- Z-N:
-
Ziehl Neelsen
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Glossary
- ML Flow
-
Rapid test lateral flow to M. leprae. It is an immunochromatographic test strip comprising nitrocellulose with a detection reagent made of wool fiber with antihuman IgM antibody labeled with colloidal gold dried from one side, and an absorption strip on the other.
- PGL-1 or phenolic glycolipid-1
-
The main antigenic glycolipid of Hansen’s bacillus, the main antigenic determinant being the last part of di- and trisaccharide of the molecule. It is one of the first specific antigens isolated from M. leprae.
- Ridley-Jopling classification
-
A classification of Leprosy/hanseniasis for research purposes. This classification made by Ridley–Jopling was based on clinical, histological, and immunological differences in the disease, but they are continuous and compose a disease spectrum.
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Eidt, L.M. (2023). Hanseniasis. In: Rangel Bonamigo, R. (eds) Dermatology in Public Health Environments. Springer, Cham. https://doi.org/10.1007/978-3-031-13505-7_5
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