Welfare considerations for horses with neurological conditions including EPM, EHV-1 myeloencephalopathy, wobbler syndrome, and headshaking syndrome.
Neurological conditions in horses create distinctive welfare challenges: these are often progressive, painful, and difficult to manage while maintaining both horse welfare and handler safety. EPM, the most common equine neurological disease in the Americas, causes the protozoan parasite Sarcocystis neurona to damage the spinal cord and brain — producing ataxia, muscle atrophy, and pain that varies dramatically in severity. Treatment with antiprotozoal drugs can achieve good recovery in mild-to-moderate cases, but severe or chronic cases often retain significant neurological deficits. Headshaking syndrome deserves particular welfare attention: horses with this condition experience trigeminal neuralgia-equivalent facial pain triggered by light, movement, and exercise — a severe quality of life impact that is often inadequately managed because the behavioral display (violent head-tossing) is misinterpreted as a training problem rather than a pain response. For progressive neurological conditions, regular welfare assessment using validated tools, honest prognosis communication with owners, and timely euthanasia decisions when quality of life deteriorates below acceptable thresholds are core veterinary welfare responsibilities.