Equis ISSN 2398-2977

Parafilariasis

Synonym(s): Summer bleeding, hemorrhagic filariasis

Contributor(s): Sue Paterson, David Senter

Introduction

  • Skin disease due to infection with a filaroid nematode living in the subcutis.
  • Cause:Parafilaria multipapillosa  Parafilaria multi papillosa  .
  • Signs: papules, matted hair and 'bleeding points'.
  • Diagnosis: clinical signs are pathognomonic, confirmed by presence of microfilaria in exudate.
  • Treatment: ivermectin   Ivermectin  should prove effective.

Pathogenesis

Etiology

Pathophysiology

  • Adult worm in nodules in subcutis.
  • Adult worms in subcutis.
  • Gravid female punctures skin (   →   'bleeding point') and lays eggs on skin surface.
  • Hair matts with coagulated blood from ruptured nodules.

Epidemiology

  • Fly vectors.

Diagnosis

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Treatment

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Outcomes

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Further Reading

Publications

Other sources of information

  • Muller, Kirk and ScottLarge Animal Dermatology(Standard reference text).


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