Tying-up in horses is a colloquial term for Exertional Rhabdomyolysis, a condition involving exercise-related muscle cramping and damage.
Some horses experience a single episode of tying up whereas others experience recurrent tying-up. During an episode, the affected horse becomes stiff and reluctant to move. Your horse may only taking short, shuffled steps.
In severe cases, a horse displays signs of distress including pawing at the ground, excessive sweating, and quick, shallow breathing due to the pain associated with this condition.
Tying-up episodes should be taken seriously. If your horse is displaying signs, a veterinarian should be contacted immediately. The veterinarian can help identify whether this is a sporadic case or whether your horse is genetically susceptible to recurrent tying-up episodes.
This podcast reviews the types, symptoms, causes and management.

Read more: https://madbarn.com/tying-up-in-horses/
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