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Equine Protozoal Myeloencephalitis (view source)
Revision as of 19:12, 19 July 2010
, 19:12, 19 July 2010→Clinical Signs
====Clinical Signs====
====Clinical Signs====
The disease onset may be acute, peracute of chronic. The insidious onset is most typical and with such cases, the clinical examination may reveal a bright, alert horse bright perhaps with some focal muscle atrophy.(Furr)In all cases, the clinical signs are referable to diffuse focal and multifocal lesions of the white and grey matter of the spinal cord and brain (EPM3)
Spinal cord:
*Ataxia and paresis
Ataxia or paresis of one or more limbs: stumbling, falling, knuckling and toe dragging.
Ataxia or paresis of one or more limbs: stumbling, falling, knuckling and toe dragging.
Sacrococcygeal involvement: mimics polyneuritis equi.
Sacrococcygeal involvement: mimics polyneuritis equi.
Signs: asymmetrical weakness, ataxia, vestibular disease (peripheral or central) peripheral neuropathy, ill-defined hindlimb lameness, asymmetric muscle atrophy. (Vetstream)
Signs: asymmetrical weakness, ataxia, vestibular disease (peripheral or central) peripheral neuropathy, ill-defined hindlimb lameness, asymmetric muscle atrophy. (Vetstream)
Spinal cord infection :
Spinal cord infection :
*Ataxia and weakness (hindlimbs > forelimbs) - often asymmetrical.
*Ataxia and weakness (hindlimbs > forelimbs) - often asymmetrical.
Infection of cerebrum, basal nuclei, cerebellum:
Infection of cerebrum, basal nuclei, cerebellum:
Focal cerebral problems:
Focal cerebral problems:
*Seizures.
*Seizures (may be the only clinical sign)(82 in Furr)
*Abnormal EEG.
*Abnormal EEG.
*Asymmetrical central blindness
*Asymmetrical central blindness