• 1.

    McDonnell SM. Is it psychological, physical or both?, in Proceedings. 51st Annu Conv Am Assoc Equine Pract 2005;231238.

  • 2.

    Landsberg G, Hunthausen W, Ackermann L. Behavior counseling and behavioral diagnostics. In: Landsberg G, Hunthausen W, Ackermann L, eds. Handbook of behaviour problems of the dog and cat. 2nd ed. London: WB Saunders Co, 1997;7388.

    • Search Google Scholar
    • Export Citation
  • 3.

    Kold SE, Ostblom LC, Philipsen HP. Headshaking caused by a maxillary osteoma in a horse. Equine Vet J 1982;14:167169.

  • 4.

    Madigan JE, Kortz G, Murphy C. Photic headshaking in the horse: 7 cases. Equine Vet J 1995;27:306311.

  • 5.

    Blythe LL. Otitis media and interna and temporohyoid osteoarthropathy. Vet Clin North Am Equine Pract 1997;13:2142.

  • 6.

    McGreevy P. Introduction. In: Equine behavior: a guide for veterinarians and equine scientists. London: WB Saunders Co, 2004;137.

  • 7.

    Gilger BC, Davidson MG, Nadelstein B. Neodymium:yttrium-aluminum-garnet laser treatment of cystic granula iridica in horses: eight cases. (1988–1996). J Am Vet Med Assoc 1997;211:341343.

    • Search Google Scholar
    • Export Citation
  • 8.

    Gemensky-Metzler AJ, Wilkie DA, Cook CS. The use of semiconductor diode laser for deflation and coagulation of anterior uveal cysts in dogs, cats and horses: a report of 20 cases. Vet Ophthalmol 2004;7:360368.

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 9.

    Horwitz DF, Neilson JC. Fly snapping. In: Horwitz DF, Neilson JC, eds. Blackwell's five-minute veterinary consult clinical companion: canine and feline behavior. Iowa: Blackwell Publishing, 2007;38:301309.

    • Search Google Scholar
    • Export Citation
  • 10.

    Brooks DE. Corpora nigra/iris cysts in the horse. Equine Vet Educ 2007;19:512514.

  • 11.

    McGreevy P. Perception. In: Equine behavior: a guide for veterinarians and equine scientists. London: WB Saunders Co, 2004;3753.

  • 12.

    Reid PJ, Borchelt PL. Learning. In: Voith VL, ed. Readings in companion animal behavior. Chatham, NJ: Veterinary Learning Systems Co Inc, 1996;6271.

    • Search Google Scholar
    • Export Citation
  • 13.

    McGreevy P. Learning. In: Equine behavior: a guide for veterinarians and equine scientists. London: WB Saunders Co, 2004;85116.

Advertisement

Successful treatment of head shaking by use of infrared diode laser deflation and coagulation of corpora nigra cysts and behavioral modification in a horse

Jeannine M. BergerDepartment of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616

Search for other papers by Jeannine M. Berger in
Current site
Google Scholar
PubMed
Close
 DVM, DACVB
,
Stephanie A. BellVeterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, CA 95616

Search for other papers by Stephanie A. Bell in
Current site
Google Scholar
PubMed
Close
 DVM, DACVIM
,
Bradford J. HolmbergVeterinary Referral Centre, 48 Notch Rd, Little Falls, NJ 07424

Search for other papers by Bradford J. Holmberg in
Current site
Google Scholar
PubMed
Close
 DVM, PhD, DACVO
, and
John E. MadiganDepartment of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616

Search for other papers by John E. Madigan in
Current site
Google Scholar
PubMed
Close
 DVM, DACVIM

Abstract

Case Description—A 15-year-old Saddlebred gelding used for competitive pleasure driving had a 1-year history of head shaking while pulling a cart.

Clinical Findings—The horse had cystic corpora nigra in both eyes and concomitant classic and operant conditioned responses to wearing a bridle with bilateral eye covers (blinkers).

Treatment and Outcome—Deflation and coagulation of the cysts with an infrared diode laser and behavior modification consisting of desensitization and counterconditioning were used to successfully restore performance.

Clinical Relevance—Behavioral changes in horses can result from a combination of physical and psychologic causes. A combination of appropriate medical treatment of physical abnormalities and a behavioral modification plan is necessary to successfully treat behavioral problems in these patients.

Abstract

Case Description—A 15-year-old Saddlebred gelding used for competitive pleasure driving had a 1-year history of head shaking while pulling a cart.

Clinical Findings—The horse had cystic corpora nigra in both eyes and concomitant classic and operant conditioned responses to wearing a bridle with bilateral eye covers (blinkers).

Treatment and Outcome—Deflation and coagulation of the cysts with an infrared diode laser and behavior modification consisting of desensitization and counterconditioning were used to successfully restore performance.

Clinical Relevance—Behavioral changes in horses can result from a combination of physical and psychologic causes. A combination of appropriate medical treatment of physical abnormalities and a behavioral modification plan is necessary to successfully treat behavioral problems in these patients.

Contributor Notes

Address correspondence to Dr. Berger.