Changes

:Abberant parasite migration (e.g. [[:Category:Strongyloidea|''Strongylus spp.'']])

:Abberant parasite migration (e.g. [[:Category:Strongyloidea|''Strongylus spp.'']])

:In endemic areas, such as the USA ''[[Sarcocystis|Sarcocystis neurona]]'' myelitis ([[Equine Protozoal Myeloencephalitis|equine protozoal myelitis]])

:In endemic areas, such as the USA ''[[Sarcocystis|Sarcocystis neurona]]'' myelitis ([[Equine Protozoal Myeloencephalitis|equine protozoal myelitis]])

:[[Rabies]] and ''[[Rhodococcus equi]]'' myeloencepahlitis should also be considered.

:[[Rabies]] and ''[[Rhodococcus equi]]'' myeloencephalitis should also be considered.

The definitive diagnosis is made on '''post-mortem examination'''. Extradural and intradural nerve roots of the cauda equina are grossly thickened and are infiltrated with inflammatory cells. Demyelination and axonal degeneration are present. Similar changes in the cranial nerves may be observed.

The definitive diagnosis is made on '''post-mortem examination'''. Extradural and intradural nerve roots of the cauda equina are grossly thickened and are infiltrated with inflammatory cells. Demyelination and axonal degeneration are present. Similar changes in the cranial nerves may be observed.