Noma (cancrum oris): questions and answers

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C O Enwonwu1, W A Falkler, E O Idigbe

  • 1School of Dentistry, University of Maryland, Baltimore 21201, USA.

Oral Diseases
|October 16, 1999
PubMed

Insights

Noma, a severe oro-facial infection, predominantly affects children in sub-Saharan Africa. Poverty, malnutrition, and poor hygiene are key risk factors, leading to high mortality and disfigurement.

Area of Science:

  • Infectious Diseases
  • Pediatric Health
  • Global Public Health

Background:

  • Noma (cancrum oris) is a devastating infectious disease causing rapid destruction of oro-facial tissues.
  • It primarily affects children aged 2-16 in sub-Saharan Africa, with significant community-level frequency.
  • Poverty, malnutrition, poor oral hygiene, and endemic infections like measles are critical risk factors.

Purpose of the Study:

  • To summarize the epidemiology, risk factors, and pathogenesis of noma.
  • To highlight the role of acute necrotizing gingivitis (ANG) as an antecedent lesion.
  • To underscore the severe mortality and morbidity associated with noma.

Main Methods:

  • Review of existing literature on noma.
  • Analysis of epidemiological data and risk factor associations.
  • Discussion of proposed microbial etiology and disease progression.

Main Results:

  • Noma results from a complex interaction of general and local factors, with a weakened immune system as the common denominator.
  • Acute necrotizing gingivitis is identified as the precursor lesion.
  • A consortium of microorganisms, including Fusobacterium necrophorum and Prevotella intermedia, is implicated in noma's evolution.

Conclusions:

  • Noma has a high mortality rate (70-90%) without prompt treatment.
  • Survivors face lifelong oro-facial disfigurement and functional impairment.
  • The economic burden of reconstructive surgery is prohibitive for affected populations.

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