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Equine self-mutilation syndrome (57 cases).

Abstract: Owners who believed they had a horse with self-mutilating behavior were asked to complete a questionnaire to obtain information on the signalment, clinical history, clinical signs, management, and treatment of the condition. Fifty-two owners of 59 horses responded; 2 cases were omitted because an organic cause was determined. Owners also were asked to complete information for unaffected horses on the same farm. Various breeds were affected, and of the 57 horses, 20 were stallions, 31 were geldings, and 6 were mares. Affected horses tended to develop the condition prior to sexual maturity. Clinical signs included glancing or biting at the flank or pectoral areas, bucking, kicking, vocalizing, rubbing, spinning, or rolling. Several management and environmental factors were examined, but none were found to be exclusively related to expression of the disorder. Castration was associated with improvement in 7 of 10 stallions. Medications and changes in management reduced or prevented the behavior in some horses. The syndrome appears to be similar to Tourette's syndrome of human beings.
Publication Date: 1994-04-15 PubMed ID: 8014092
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  • Journal Article

Summary

This research summary has been generated with artificial intelligence and may contain errors and omissions. Refer to the original study to confirm details provided. Submit correction.

This research article looks at self-mutilating behavior in horses, gathering information through questionnaires from owners of such horses. They examined information about the horses’ health history, the signs of the behavior, and any management or treatment tactics used. Various breeds were included in the study and the horses were of varying genders and ages, though the syndrome tended to develop earlier in life. None of the investigated environmental and management factors could be definitively linked to the disorder. However, some treatments, such as castration and medication, were found to have a positive impact. The self-mutilating behavior in these horses seemed to have similar qualities to human Tourette’s syndrome.

Research Methodology:

  • The researchers distributed questionnaires to owners who believed their horse demonstrated self-mutilating behavior. These questionnaires were designed to gather data on signalment (the description of the horse), clinical history, clinical signs, and management and treatment strategies used.
  • Out of the 59 replies received from owners, 2 were removed from the analysis, since an organic cause for the behavior was identified in those instances.

Clinical Findings:

  • The study sample comprised various horse breeds. Among the 57 horses studied, 20 were stallions, 31 were geldings, and 6 were mares.
  • The horses tended to develop self-mutilating behavior before they reached sexual maturity.
  • The syndromic behavior ranged from glancing or bitting at the flank or pectoral areas, bucking, kicking, vocalizing, rubbing, spinning, or rolling.

Environmental and Management Factors:

  • The researchers examined several management and environmental factors in the study. However, none of these factors were definitively linked to the expression of the disorder.

Interventions and Treatments:

  • Several strategies were studied to manage and treat the self-mutilating behavior.
  • Castration was one such strategy that brought about improvement in 7 of the 10 stallions that were treated.
  • The use of medications and changes in the management approach also resulted in the reduction, or in some cases prevention, of the self-mutilating behavior.

Comparison with Human Tourette’s Syndrome:

  • Toward the end of the study, the researchers suggested a similarity between the equine self-mutilation syndrome and human Tourette’s syndrome, based on the behavior patterns observed.

Cite This Article

APA
Dodman NH, Normile JA, Shuster L, Rand W. (1994). Equine self-mutilation syndrome (57 cases). J Am Vet Med Assoc, 204(8), 1219-1223.

Publication

ISSN: 0003-1488
NlmUniqueID: 7503067
Country: United States
Language: English
Volume: 204
Issue: 8
Pages: 1219-1223

Researcher Affiliations

Dodman, N H
  • Department of Surgery, School of Veterinary Medicine, Tufts University, North Grafton, MA 01536.
Normile, J A
    Shuster, L
      Rand, W

        MeSH Terms

        • Age Factors
        • Animal Feed
        • Animals
        • Appetite
        • Behavior, Animal
        • Breeding
        • Female
        • Horse Diseases / psychology
        • Horses
        • Housing, Animal
        • Male
        • Orchiectomy / veterinary
        • Retrospective Studies
        • Self Mutilation
        • Sex Factors
        • Surveys and Questionnaires
        • Syndrome

        Citations

        This article has been cited 3 times.
        1. Hickman D, Prakash A, Bell R. Predictive Value of Grooming Behavior for Development of Dermatitis in Selectively Bred P Rats as a Model of Trichotillomania Hair Pulling Disorder.. Vet Sci 2022 Feb 18;9(2).
          doi: 10.3390/vetsci9020089pubmed: 35202342google scholar: lookup
        2. Devine DP. Self-injurious behaviour in autistic children: a neuro-developmental theory of social and environmental isolation.. Psychopharmacology (Berl) 2014 Mar;231(6):979-97.
          doi: 10.1007/s00213-013-3279-2pubmed: 24057764google scholar: lookup
        3. Felling RJ, Singer HS. Neurobiology of tourette syndrome: current status and need for further investigation.. J Neurosci 2011 Aug 31;31(35):12387-95.