Diagnosing equine protozoal myeloencephalitis: Complicating factors

Equine protozoal myeloencephalitis (EPM) may be one of the most difficult a ntemortem diagnoses for practitioners to make accurately. Much of this diff iculty results from the perceived clinical variability in the presentation of EPM. Because antemortem laboratory testing for EPM is only one piece of the diagnostic puzzle, diagnostic accuracy relies on the completeness of ph ysical, neurologic, and diagnostic evaluations.