The big shiver – Shivering Syndrome

A doping scandal in dressage riding brought this condition to the attention of riders and owners a few years ago. But what exactly is this condition? More and more horses, especially sport horses, are now affected by this neuromuscular disease, the causes of which are still largely unknown. It is considered incurable and can severely impair a horse's performance. Large, heavy horses between the ages of 4 and 7 are particularly at risk, as are horses with naturally high muscle tone. Male horses are more commonly affected than mares.

INHALT
Symptoms Diagnosis Causes Treatment Forecast
Symptoms

The first signs of this disease are often noticed when grooming the horses. Muscle tremors, jerky movements, and muscle tension are observed.the horses show reluctance to give their hooves and sometimes jerk their hooves up sharply when they are lifted. The entire leg can spasm and the animals have visible difficulty putting the trembling leg back down.these horses also have problems moving backwards, which is particularly noticeable when getting out of a trailer. In most cases, the hindquarters are affected, but uncontrollable twitching can also occur in the head or forequarters. The intensity of the symptoms can vary greatly. In some cases, the twitching only occurs intermittently and can intensify under stress. In advanced stages of the disease, a significant loss of muscle mass can be observed.

Horse with shivering
Horse with hind leg raised
Diagnosis

The appearance of the disease is not always clear to the owner, so a veterinarian should always be consulted. The symptoms are often confused with those of rooster foot or knee joint disease. A blood test can be performed, but it does not provide a clear indication of the disease, as the levels of the characteristic muscle enzymes do not differ from those of healthy animals. Nevertheless, the results can provide clues about possible causes or underlying diseases. Particular attention should be paid to the examination of minerals and trace elements, which are important components of muscle metabolism.

Causes

There is still no sound scientific evidence regarding the triggers of shivering syndrome. Muscular, neurological, genetic, traumatic, and hormonal causes are being discussed.

Treatment

Since the exact causes are still unclear, the aim of treatment is to reduce the symptoms. Many affected horses show only minor signs and can be ridden (almost) without restriction, even in sport.

You can support your horse suffering from shivering and enable it to live a pain-free life as a riding horse by taking the following measures:

  • Reduce/avoid stress as much as possible
  • Promote muscle development through regular exercise
  • Keep visits to the farrier as short as possible, sedate if necessary
  • Feed a low-starch diet
  • Regular physiotherapy to treat cramped muscles

Forecast

The disease is still considered incurable, which is why the prognosis must be classified as poor. However, under the above-mentioned conditions, the horse can be given a pain-free life and also be used as a riding horse, albeit to a limited extent.