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Tuberculosis, or TB, is a bacterial infectious disease caused by Mycobacterium tuberculosis. While its primary impact is on the lungs, leading to pulmonary tuberculosis, it can also affect various other organs, a condition referred to as extrapulmonary tuberculosis.
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Related Experiment Video

Updated: Apr 7, 2026

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
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Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus

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Tuberculoid leprosy presenting as a "racket" lesion.

Letícia Stella Gardini Brandão1, Gabriela Franco Marques1, Jaison Antônio Barreto1

  • 1Lauro de Souza Lima Institute, Bauru, SP, Brazil.

Anais Brasileiros De Dermatologia
|July 2, 2015
PubMed
Summary

The rare "racket" lesion in tuberculoid leprosy, caused by nerve damage, is described. This specific lesion persisted even after multidrug therapy treatment.

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Area of Science:

  • Dermatology
  • Neurology
  • Infectious Diseases

Background:

  • Leprosy is a chronic infectious disease caused by Mycobacterium leprae.
  • Tuberculoid leprosy is a paucibacillary form characterized by granulomatous inflammation.
  • Cutaneous nerve involvement is a hallmark of leprosy.

Observation:

  • A rare "racket" lesion, a thickened nerve branch emerging from a tuberculoid plaque, was observed.
  • This presentation results from centripetal damage to cutaneous nerves due to granuloma formation.
  • The case involved a typical presentation of tuberculoid leprosy.

Findings:

  • The described "racket" lesion represents a specific manifestation of tuberculoid leprosy.
  • The lesion showed resistance to treatment with paucibacillary multidrug therapy.
  • Histopathological examination revealed granuloma formation causing nerve damage.

Implications:

  • This case highlights the potential for rare clinical presentations in tuberculoid leprosy.
  • The persistence of the "racket" lesion suggests possible treatment challenges or atypical disease progression.
  • Further research into nerve-sparing treatment strategies for leprosy may be warranted.