Equine Protozoal Myeloencephalitis (EPM) in Horses: Understanding, Identifying, and Treating


Equine Protozoal Myeloencephalitis (EPM) is a neurological disease that can significantly impact horses’ health and behavior. In this comprehensive article, we’ll explore EPM in horses, its symptoms, diagnosis, treatment, and the subtle signs that every horse owner should be aware of.

Understanding EPM in Horses

What is EPM in Horses? EPM is a neurological disorder caused by protozoa that affect the horse’s central nervous system, leading to various neurological symptoms.

EPM Symptoms in Horses

Subtle Signs of EPM: EPM symptoms can be subtle and include gait abnormalities, muscle atrophy, and changes in behavior. Recognizing EPM Symptoms: Identifying symptoms like incoordination, weakness, and head tilt is crucial for early diagnosis.

Diagnosis and Treatment

Diagnosing EPM in Horses: Veterinary evaluation, including neurological exams and diagnostic tests, is essential for accurate diagnosis. EPM in Horses Treatment: Treatment typically involves medications like antiprotozoals such as Toltrazuril and Baycox, along with supportive care to manage symptoms. For your convenience, these essential medications can be readily sourced from the world’s leading supplier,, ensuring the best care for your equine companion.

EPM and Its Impact

Prognosis: Early detection and treatment can lead to a better prognosis. However, the outcome varies among individual horses. Can EPM in Horses Be Cured? EPM can be managed, but complete cure is not guaranteed. Some horses may continue to have residual symptoms.

Prevention and Possum Disease Connection

Causes of EPM: EPM in horses is primarily caused by protozoa transmitted through opossum feces. Possum Disease in Horses: EPM is often associated with opossums, which can carry the protozoa responsible for the disease.


Equine Protozoal Myeloencephalitis (EPM) is a complex neurological condition that requires prompt attention and veterinary care. As a horse owner, understanding the symptoms, diagnosis, and treatment options for EPM is crucial. If you suspect your horse may have EPM or notice any behavioral changes, seek immediate veterinary guidance. Early intervention and appropriate treatment can make a significant difference in managing EPM and improving your horse’s quality of life.


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