Overview
What is the global prevalence of leprosy?
What is the global incidence of leprosy?
What steps is the WHO taking to reduce the global rate of new cases of leprosy?
Why is leprosy expected to remain an ongoing public health problem?
What is the pathophysiology of leprosy in hosts with a vigorous immune response?
What is the pathophysiology of leprosy in individuals who have a minimal immune response?
What happens if patients present with both categories of leprosy?
What is the Ridley-Jopling classification of leprosy?
What is the WHO classification of leprosy?
What is the incidence of leprosy in the US?
What is the prevalence of leprosy globally, according to WHO?
What is the mortality/morbidity rate of leprosy?
What are the characteristic impairments in leprosy?
What are the impairments of advanced leprosy?
What are the racial predilections of leprosy?
How does the incidence of leprosy vary by sex?
Which age groups are at highest risk for leprosy?
Presentation
What are the symptoms of leprosy?
What should be the focus of travel history in the evaluation of leprosy?
How long is the incubation period of leprosy?
What are the cardinal signs of leprosy?
What should be included in the physical exam for leprosy?
Which physical findings are characteristic of tuberculoid leprosy?
Which physical findings are characteristic of lepromatous leprosy?
What are the symptoms of advanced leprosy?
Which physical findings are characteristic of borderline tuberculoid leprosy?
Which physical findings are characteristic of mid borderline leprosy?
Which physical findings are characteristic of borderline lepromatous leprosy?
Which physical findings are characteristic of indeterminate leprosy?
What are the causes of leprosy?
What are the routes of transmission of leprosy?
DDX
Which conditions should be included in the differential diagnoses for leprosy?
What are the differential diagnoses for Leprosy?
Workup
What is the WHO case definition of leprosy?
What is the role of lab studies in the diagnosis of leprosy?
Which lab tests are performed following drug treatment for leprosy?
What is the role of immunologic tests in the diagnosis of leprosy?
What is the role of nerve biopsy in the diagnosis of leprosy?
Which histologic findings are characteristic of leprosy?
How is leprosy graded and staged?
Treatment
What is the WHO recommended multidrug regimen for treatment of leprosy?
What is the role of corticosteroids and prednisolone in the treatment of leprosy?
What is the prevalence of drug-resistant leprosy?
What is the role of surgery for leprosy?
What are the preoperative requirements for surgical treatment of leprosy?
What is the role of neural surgery in the treatment of leprosy?
What is the goal of surgery for leprosy?
Which surgical procedure is indicated for contractures of the hand resulting from leprosy?
Which surgical procedure is indicated as last resort for extreme cases of leprosy?
What surgical procedure is indicated for loss of eyelid function in leprosy?
Which cosmetic procedures may be considered for leprosy?
Which specialist consultations are needed for the treatment of leprosy?
How is the long-term neurologic sequelae of leprosy prevented?
What is a type 1 reaction in leprosy?
How are type 1 reactions in leprosy managed?
What are type 2 reactions in leprosy?
How are type 2 reactions in leprosy managed?
What is the Lucio phenomenon in leprosy?
Medications
Which medications are used in the treatment of leprosy?
Which medications in the drug class Antibiotics, Other are used in the treatment of Leprosy?
Which medications in the drug class Macrolides are used in the treatment of Leprosy?
Follow-up
What is included in outpatient care for leprosy?
Which lab tests are performed during the treatment of leprosy?
What are the benefits of a successful treatment of leprosy?
What should be included in long-term monitoring following treatment of leprosy?
What is the prognosis of leprosy following treatment?
What is included in the management of leprosy?
What services are provided by regional ambulatory clinics in for the management of leprosy?
Why should patients be educated about the importance of continuing long-term treatment for leprosy?
What are the recommendations for the household contacts of patients with leprosy?
How does leprosy affect pregnant patients?
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Hands with Z-thumbs, clawing, contractures, and shortening of fingers due to repetitive injury and healing. Ho Chi Minh City, Vietnam. Courtesy of D. Scott Smith, MD.
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Patient with facial nerve palsy and contractures of the hand. Daloa, Ivory Coast. Courtesy of D. Scott Smith, MD.
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Chronic insensate patch due to leprosy infection. Ho Chi Minh City, Vietnam. Courtesy of D. Scott Smith, MD.
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Characteristic clawed hand deformity caused by ulnar involvement in leprosy. Daloa, Ivory Coast. Courtesy of D. Scott Smith, MD.
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Chronic nonhealing ulcer at the metatarsal head resulting from loss of sensation in the feet. Karigiri, Tamil Nadu, India. Courtesy of Tara Ramachandra.
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Multiple flat hypopigmented lesions on shoulder and neck, suggestive of multibacillary leprosy. Note ulceration of hypothenar area of hand, indicative of sensory loss with curled 5th digit, from ulnar neuropathy. Redwood City, California, United States. Courtesy of D. Scott Smith, MD.
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Man with advanced deformities caused by unmanaged leprosy. Keratitis, loss of eyebrow, thickened skin, and typical hand impairments. Ho Chi Minh City, Vietnam. Courtesy of D. Scott Smith, MD.
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Histopathology of leprosy: Large numbers of acid-fast bacilli (in clusters) in histiocytes and within nerves. Fite-Faraco stain 500 X. Courtesy of Tara Ramachandra, MD, and D. Scott Smith, MD.
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Patient with multibacillary leprosy showing subsequent erythema nodosum leprosum reaction. Santa Clara, California. Courtesy of D. Scott Smith, MD.
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Patient with erythema nodosum leprosum type 2 reaction several weeks after initiation of drug therapy. This photograph was taken after tendon release. Redwood City, California. Courtesy of D. Scott Smith, MD.
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Increased pigmentation on the face due to clofazimine therapy. Courtesy of D. Scott Smith, MD.
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2018 leprosy treatment guidelines. Courtesy of the WHO.
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Map of countries reporting rifampicin resistance in leprosy between 2009 and 2015. Courtesy of the WHO.
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2018 WHO guidelines for treatment of drug-resistant leprosy. Courtesy of the WHO.
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2018 guidelines for single-dose rifampicin. Courtesy of the WHO.
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WHO map showing new cases of new leprosy cases, 2020. Courtesy of the WHO.