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Successful Treatment of Onchocerca lupi Auricular Infestation Causing Severe Otitis Externa in a Dog
Franco Martini1, Manuela Schnyder2, David Schmid3
1Department of Small Animal Medicine, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland.
Veterinary Dermatology
|September 20, 2026
Abstract:
We report the first successfully treated case of auricular Onchocerca lupi infection in a dog in Switzerland, causing severe unilateral otitis externa. Diagnosis was confirmed by molecular analysis after nematode extraction. Combined therapy led to complete remission within 6 weeks, highlighting O. lupi as a differential for chronic otitis with mass formation.

