Paper II
2015 February (2010 Scheme) · 40 marks · 120 min

Question

Lepra reaction

Q53 marksShort Notes

Answer

Lepra reactions are immunologically mediated acute inflammatory episodes occurring during the course of leprosy, either spontaneously or during/after treatment.

Type 1 (Reversal) reaction

  • Cell-mediated (delayed-type) hypersensitivity reaction
  • Presents with acute inflammation of existing skin lesions and nerves (neuritis, risk of permanent nerve damage)
  • Treatment: Corticosteroids (Prednisolone)

Type 2 reaction (Erythema Nodosum Leprosum, ENL)

  • Immune complex-mediated (Type III hypersensitivity) reaction, occurs mainly in lepromatous/borderline lepromatous leprosy
  • Presents with tender erythematous nodules, fever, malaise, neuritis, iritis
  • Treatment: Thalidomide (drug of choice, contraindicated in women of childbearing age due to teratogenicity), Corticosteroids

Anti-leprosy multidrug therapy is usually continued during treatment of the reaction.

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