ISSN 2398-2977      

Psoroptic mange

pequis
Contributor(s):

Dawn Logas

Sue Paterson

Synonym(s): Body mange


Introduction

  • A parasitic skin disease of young stabled horses.
  • Cause:Psoroptesspp especiallyP. equi  Psoroptes spp  .
  • Psoroptes hippotus(cuniculi) may be a separate species which may cause some cases of ear irritation and headshaking.
  • Signs: pruritus with headshaking and tail rubbing.
  • Diagnosis: identification of mites in groomings, ear wax or skin scrapings.
  • Treatment: ectoparasiticides.
  • Prognosis: good.

Pathogenesis

Etiology

  • Psoroptesspp   Psoroptes spp  .
  • Psoroptes equi- body mange.
  • Psoroptes hippotis(cuniculi) - ear infestation   →   headshaking (reported in Australia and USA).

Pathophysiology

  • Obligate non-burrowing parasite   →   skin damage and hypersensitivity   →   self-trauma   →   alopecia, encrustation and skin thickening.
  • Non-burrowing mite.
  • Piercing and chewing mouthparts bite epidermis   →   severe skin damage   →   exudation of serum.

Timecourse

  • Lifecycle: 10 days.

Epidemiology

  • Short lifecycle of 10 days   →   rapid spread of disease.
  • Obligatory parasite.
  • Mites can be spread by headcollars and rugs.

Diagnosis

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Treatment

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Prevention

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Outcomes

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Mukhtar T A, Abbas B & Ibrahim K E E (1987) Five cases of psoroptic mange in the domestic donkey (Equus asinus asinus) and treatment with ivermectin. Equine Vet J 19 (2), 143-144 (concise report of clinical signs and treatment of psoroptic mange in the donkey) PubMed.

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