ISSN 2398-2977      

Anhidrosis

pequis
Contributor(s):

Graham Munroe


Introduction

  • Inappropriate or no sweating in hot climates.
  • Cause: unknown, possibilities include: hypothyroidism, hypochloremia, exhausted sweat glands and increased blood epinephrine levels.
  • Horses moved from cold to hot humid climates, in vigorous exercise, cease to sweat at onset of exercise.
  • Signs: high rectal temperatures and respiratory rates with decreased sweating and chronic coat changes.
  • Diagnosis: intradermal epinephrine sweating test.
  • Treatment: move horse to cooler climate, decrease exercise, medical or nutritional supplements.

Pathogenesis

Etiology

  • Possible causes include:
  • Hypothyroidism .
  • Hypochloremia.
  • Increased blood epinephrine concentrations.
  • Exhaustion of sweat glands.

Predisposing factors

General
  • Horses moved from a cold or temperate climate to a hot humid one.
  • Horses in vigorous exercise.

Pathophysiology

  • Inappropriate or no sweating in hot climates.
  • Cause unknown.
  • Decreased ability of sweat glands to respond to epinephrine.
  • Atrophy of sweat glands.

Diagnosis

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Treatment

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Outcomes

This article is available in full to registered subscribers

Sign up now to obtain ten tokens to view any ten Vetlexicon articles, images, sounds or videos, or Login

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Geor R J et al (1998) Thermoregulatory adaptations associated with training and heat acclimatisation. Vet Clin North Am Equine Pract 14 (1), 97-120 PubMed.
  • Guthrie A J et al (1992) Use of a semi-quantitative sweat test in Thoroughbred horses. J S Afr Vet Assoc 63 (4), 162-165 PubMed.
  • Jenkinson D M et al (1989) Effects of season and lower ambient temperature on the structure of the sweat glands in anhidrotic horses. Equine Vet J 21 (1), 59-65 PubMed.
  • Mayhew I G et al (1987) Clinical, clinicopathologic, and epidemiologic features of anhidrosis in central Florida Thoroughbred horses. J Vet Intern Med (3), 136-141 PubMed.
  • Jenkinson D M et al (1985) Ultrastructural variations in the sweat glands of anhidrotic horses. Equine Vet J 17 (4), 287-291 PubMed.
  • Thomsett L R (1984) Non-infectious skin diseases of horse. Vet Clin North Am Large Anim Pract (1), 59-78 VetMedResource.
  • Warner A et al (1983) Equine anhidrosis - a review of pathophysiologic mechanisms. Vet Res Commun (4), 249-264 PubMed.
  • Beadle R E et al (1982) Summertime plasma catecholamine concentrations in healthy and anhidrotic horses in Louisiana. Am J Vet Res 43 (8), 1446-1448 VetMedResource.
  • Warner A E et al (1982) Equine anhidrosis - a survey of affected horses in Florida. JAVMA 180 (6), 627-629 VetMedResource.
  • Peter J E et al (1981) Anhidrosis in a Thoroughbred. Vet Med Small Anim Clin 76 (5), 730-732 VetMedResource.

Can’t find what you’re looking for?

We have an ever growing content library on Vetlexicon so if you ever find we haven't covered something that you need please fill in the form below and let us know!

 
 
 
 

To show you are not a Bot please can you enter the number showing adjacent to this field

 Security code