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The steps in the pathogenesis of nerve injury in leprosy are depicted in Figure 1. Localisation of M. leprae to nerve, Schwann cell infection even the depicted sequence of these events is uncertain. Considerable additional data is needed to determine the connections between these processes and their underlying mechanisms. Additionally, although much emphasis is given to myelinated fibres (and demyelination) in studies of the biology of leprosy neuropathy, the small, sensory fibres in the skin are not myelinated. Additional studies of mechanisms of injury to these nerves is required. The results of all of these studies can be reasonably expected to identify new points for clinical intervention in--and possibly the prevention of--nerve injury in leprosy.
David M. Scollard (Mon,) studied this question.
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