Abstract
Leprosy is a chronic infectious disease caused by Mycobacterium leprae , commonly manifesting as hypopigmented anesthetic patches with thickened nerves. Primary hyperpigmentation in leprosy is a rare manifestation. Literature search showed only few case reports of Hansen's disease with single hyperpigmented patch and involvement of relatively immune zones like palms and soles. We report a case of leprosy presenting primarily as hyperpigmented patches over the trunk and extremities with involvement of palms and soles which is a rare presentation.
Highlights
Leprosy known as Hansen’s disease caused by the bacillus Mycobacterium leprae is a chronic infectious disease with various epidemiological characteristics and clinical manifestations
We report a case of borderline tuberculoid (BT) leprosy manifesting as hyperpigmented patches over the trunk and extremities along with the involvement of palms and soles, which is a rare presentation
Leprosy cases often present with classical features of hypopigmented anesthetic patches, thickened nerves and presence of acid-fast bacilli on slit-skin smear examination and skin biopsy
Summary
Leprosy known as Hansen’s disease caused by the bacillus Mycobacterium leprae is a chronic infectious disease with various epidemiological characteristics and clinical manifestations. The secondary pigmentation due to clofazimine and lepra reaction is common, primary hyperpigmentation in leprosy is a rare feature. Quick response code: There are certain immune zones like scalp, eyelids, axillae, palms and soles, lumbosacral area, midline back, groins and genitalia where leprosy lesions are rarely seen.[2] But clinical, histological and bacteriological evidence of involvement of these so called “immune zones” have been documented.
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