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Related Experiment Videos

Primary tuberculosis cases presenting with erythema nodosum.

Ali Mert1, Resat Ozaras, Fehmi Tabak

  • 1Infectious Diseases and Clinical Microbiology, Cerrahpasa Medical Faculty, University of Istanbul, Turkey.

The Journal of Dermatology
|January 24, 2004
PubMed
Summary

Erythema nodosum is frequently associated with primary tuberculosis (TB) in developing nations. This study highlights TB as the leading cause of erythema nodosum, emphasizing the need for TB screening in patients presenting with this condition.

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Area of Science:

  • Medicine
  • Infectious Diseases
  • Dermatology

Background:

  • Erythema nodosum (EN) is a skin manifestation often linked to underlying systemic diseases.
  • Tuberculosis (TB) is a significant cause of EN, particularly in developing countries.
  • Primary TB is specifically associated with the presentation of EN.

Purpose of the Study:

  • To investigate the prevalence and significance of primary tuberculosis (TB) as an etiology of erythema nodosum (EN).
  • To assess the diagnostic yield of identifying primary TB in patients presenting with EN.

Main Methods:

  • Retrospective analysis of 335 patients diagnosed with TB over 20 years.
  • Evaluation of pulmonary and extrapulmonary TB cases, with a focus on primary TB.
  • Analysis of 50 patients with EN over 10 years to determine etiology.

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Main Results:

  • Of 335 TB patients, 61 (18%) had pulmonary and 274 (82%) had extrapulmonary TB.
  • Ten (16%) pulmonary TB cases were primary, and all presented with EN.
  • In 50 EN patients, primary TB was the most frequent determined etiology (20%).

Conclusions:

  • Primary tuberculosis is a critical and frequent cause of erythema nodosum.
  • Screening for primary TB should be considered in patients with EN, especially in high-prevalence areas.
  • This association underscores the importance of recognizing EN as a potential indicator of primary TB.