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Pseudo-orthostatic tremor in a cat.
Marende M de Gier1, Dian Schuil2, Laurent Garosi3
1Department of Neurology, Evidensia Small Animal Hospital Hart van Brabant, Waalwijk, The Netherlands.
Journal of Veterinary Internal Medicine
|April 5, 2025
Summary
A cat experienced a tremor when standing, diagnosed as pseudo-orthostatic tremor. This condition, characterized by low-frequency tremors, did not improve with common medications like gabapentin or clonazepam.
Area of Science:
- Veterinary Neurology
- Movement Disorders in Animals
Background:
- Tremors in animals can indicate various neurological conditions.
- Idiopathic tremors require accurate diagnosis for effective management.
Observation:
- An 11-month-old cat presented with pelvic limb tremors specifically when standing or extending the stifle.
- Neurological examination was normal, and tremors ceased during weight-bearing tests.
- Electromyography revealed a consistent low-frequency (6 Hz) tremor.
Findings:
- The cat was diagnosed with pseudo-orthostatic tremor, a condition exacerbated by gravity.
- Tremor intensity varied, impacting activities like jumping.
- Gabapentin and clonazepam treatments were ineffective and clonazepam caused adverse effects.
Implications:
- Pseudo-orthostatic tremor is a rare condition in felines.
- Further research is needed to understand the pathophysiology and develop effective treatments.
- This case highlights the diagnostic challenges and limited therapeutic options for this tremor type.
