Answer
Leprosy can occur at any age, but, in developing countries, the age-specific incidence of leprosy peaks in children younger than 10 years, who account for 20% of leprosy cases. Leprosy is very rare in infants; however, they are at a relatively high risk of acquiring leprosy from the mother, especially in cases of lepromatous leprosy or midborderline leprosy.
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Media Gallery
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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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WHO map showing worldwide prevalence of leprosy in 2017. Courtesy of the WHO.
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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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