(trailering, shows, heat), it is thought that the prolonged exposure of sweat gland receptors to high levels of epinephrine causes a down regulation of the sweat response to heat & stress. Predispositions include plugged hair follicles (sebum), hot humid climates, horses that have moved to tropical areas from temperate areas. Anhydrosis can be partial or complete, sudden or gradual onset. Signs & symptoms include no sweating in hot weather after exercise, fast pulse, high fever, dry skin/hair, rapid & laboured breathing, flared nostrils, exercise intolerance, dermatitis and chronically weight loss and alopecia on face. Diagnosis is intradermal injection of epinephrine to evaluate sweat response. A horse should sweat within 30 minutes after injection. There is no specific treatment. Spontaneous recovery can occur, provide fans/air conditioning for horses that are hot, don’t exercise during hot humid weather, nutritional supplements and !
It can be mistaken for the respiratory condition known as “breathers”.
Hyperhydrosis
Hyperhydrosis is defined as excessive sweating. It is considered a
not a
disease.
Cold & clammy sweats usually indicate horse that is stressed or in blood being shunted away from skin to the vital core organs.
. This is due to
Hot sweats occur with exercise and
due to blood being brought to the skin’s
surface to cool the body.
Profuse sweating is indicative of a lack of
, administration of drugs or
tranquilizers, and a sign of tetanus and encephalomyelitis.
sweating sometimes occurs at previous sites of injury, with nerve damage or
insecticide poisoning.
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