Neuromyotonia in a horse |
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Authors: | Luiza Stachewski Zakia Mariana Isa Pocci Palumbo Raffaella Bertoni Cavalcanti Teixeira Luiz Antnio Lima Resende Mauro Pereira Soares Jos Paes de Oliveira‐Filho Rogrio Martins Amorim Alexandre Secorun Borges |
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Institution: | Luiza Stachewski Zakia,Mariana Isa Pocci Palumbo,Raffaella Bertoni Cavalcanti Teixeira,Luiz Antônio Lima Resende,Mauro Pereira Soares,José Paes de Oliveira‐Filho,Rogério Martins Amorim,Alexandre Secorun Borges |
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Abstract: | This article describes the clinical and electromyographic findings of neuromyotonia in a 19‐month‐old male crossbred Quarter Horse that presented with stiffness and muscle asymmetry in the hind limbs as well as sacrococcygeal, paravertebral, and gluteal myokymia. An electromyographic study showed spontaneous continuous muscle fiber activity with high‐frequency discharges, fibrillations, positive sharp waves, fasciculation potentials, and complex repetitive discharges. Histological examination of the gluteal muscle showed a mixed neurogenic and myopathic pattern. The findings are consistent with neuromyotonia. |
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Keywords: | electromyography equine myokymia myopathy stiffness |
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