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Shivers (Shivering, neuromuscular movement disorder)

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Shivering (shivers) is a usually slowly progressive neuromuscular movement disorder that mainly affects large horse breeds. Typical are involuntary twitching and an overextended, trembling posture of the hindquarters, especially when backing up and lifting the hind legs (e.g. for hoof picking or shoeing). The exact cause is not conclusively clarified; changes in the cerebellum (Purkinje cells) are discussed.

Veterinary care required

This condition belongs in veterinary diagnosis and treatment. Compounds are at most supportive.

Priority · vet & management

Shivering belongs in a veterinary examination with careful differential diagnosis (distinguishing it from stringhalt, wobbler and muscle diseases such as PSSM). As there is so far no proven causal treatment, veterinarily guided management, regular gentle exercise and horse-friendly handling of the hindquarters (farrier/hoof care) come first.

Possible causes

  • · neuromuscular disorder with suspected involvement of the cerebellum (Purkinje cells)
  • · marked breed predisposition of large-framed horses (e.g. draught horses, large warmbloods)
  • · exact cause not conclusively clarified; distinction from stringhalt and PSSM needed
  • · worsening often described through stress, cold or lack of exercise

Prevention

A reliable prevention is not known; regular, gentle exercise and avoiding long box rest are described as favourable for maintaining mobility.

Equiterna's take

Equiterna treats shivers as a chronic-progressive condition with a still unclear cause and makes it transparent that there is no proven cure — the practical lever lies in vet-accompanied management and in safe handling of the hindquarters.

Usage note

This content is for information and education. It does not replace veterinary diagnosis or treatment. If your horse shows signs of illness, consult a veterinarian.

Equiterna is an intermediary platform for equine knowledge, marketplace and tools — not a veterinary-medicines dealer, veterinary practice or pharmacy. Compound information is study-attributed and free of healing claims. Legal framework: Regulation (EU) 2019/6 / TAMG (DE/AT), Feed Regulation (EC) 767/2009, FEI Prohibited Substances List, HWG.