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Dose-dependent thalidomide induced bradycardia in young erythema nodosum leprosum patient

Pugazhenthan Thangaraju1, Sajitha Venkatesan2, Elavarasan Sivashanmugam2

  • 1Department of Pharmacology, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India.

Indian Journal of Pharmacology
|April 30, 2019
PubMed

Insights

Leprosy reactions, specifically Erythema Nodosum Leprosum (ENL), can be treated with thalidomide. This case highlights a rare, dose-dependent bradycardia side effect in an ENL patient receiving thalidomide treatment.

Area of Science:

  • Immunology
  • Dermatology
  • Pharmacology

Background:

  • Leprosy is a chronic infectious disease with potential immunological complications.
  • Lepra reactions, particularly Erythema Nodosum Leprosum (ENL), represent significant inflammatory manifestations.
  • ENL management often involves immunomodulatory drugs like thalidomide.

Observation:

  • A young male patient with ENL was treated with thalidomide.
  • The patient developed bradycardia during the course of treatment.
  • The bradycardia appeared to correlate with the dosage of thalidomide administered.

Findings:

  • A dose-dependent relationship was observed between thalidomide administration and the occurrence of bradycardia in this ENL patient.
  • This suggests a potential pharmacodynamic interaction between thalidomide and cardiac function in the context of ENL.

Implications:

  • Clinicians should be vigilant for cardiac side effects, such as bradycardia, when prescribing thalidomide for ENL.
  • Further research may be warranted to elucidate the mechanism of thalidomide-induced bradycardia in leprosy patients.
  • This case underscores the importance of individualized patient monitoring during immunomodulatory therapy for leprosy complications.

Keywords:
Erythema nodosum leprosumleprosythalidomide

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