Equine protozoal myeloencephalitis (EPM) is a debilitating neurological disease of horses caused by Sarcocystis neurona, requiring prompt diagnosis and treatment to prevent permanent disability.
EPM causes neurological deficits that profoundly affect horse welfare and safety. An ataxic horse risks injury to itself and its handler. The chronic nature of infection means welfare monitoring throughout treatment is essential - horses may initially worsen before improving. Long-term rehabilitation with physiotherapy and careful exercise programs helps horses rebuild coordination and muscle mass after successful treatment.