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Robert N. Oglesby DVM
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Username: dro

Post Number: 21802
Registered: 1-1997

Posted on Friday, Nov 21, 2008 - 8:58 am:

J Am Vet Med Assoc. 2008 Nov 15;233(10):1610-2.
Successful treatment of head shaking by use of infrared diode laser deflation and coagulation of corpora nigra cysts and behavioral modification in a horse.

Berger JM, Bell SA, Holmberg BJ, Madigan JE.

Department of Medicine and Epidemiology, School of Veterinary Medicine, University of California, Davis, CA 95616.

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.

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