• William F Gilsenan, Liberty M Getman, Eric J Parente, and Amy L Johnson.
• Department of Large Animal Clinical Sciences, Virginia-Maryland Regional College of Veterinary Medicine, Blacksburg, Virginia.
• Vet Surg. 2014 Aug 1; 43 (6): 678-84.

ObjectiveTo report headshaking and presumptive trigeminal neuritis as a potential complication after paranasal sinus surgery in horses.Study DesignRetrospective case series.AnimalsHorses (n = 5) that developed headshaking within 45 days of paranasal sinus surgery.MethodsMedical records (2007-2010) of horses that had been evaluated for headshaking after paranasal sinus surgery were reviewed.ResultsOf 5 horses that developed headshaking within 45 days of paranasal sinus surgery, resolution occurred after treatment in 2 horses. One horse was euthanatized because clinical signs associated with headshaking could not be controlled. Headshaking persisted in the other 2 horses but was either adequately controlled with analgesics or was considered infrequent and transient enough to not warrant therapeutic intervention. Only 2 of 5 horses returned to full work after development of headshaking.ConclusionsHeadshaking because of presumptive trigeminal neuritis is a possible career-ending or fatal complication of paranasal sinus surgery in horses.© Copyright 2014 by The American College of Veterinary Surgeons.

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