الكاتب: Multiple References

An 18-year-old 600-kg Percheron cross gelding presented with neurologic signs of 24-hour duration. The gelding had no history of illness. Initial physical examination showed abnormalities that included a small corneal ulcer in the left eye and periocular skin abrasions on the right side. The gelding had depressed mentation and right head turn. The horse circled to the right, had a tendency to lean and fall to the right, and was ataxic in all limbs. Cranial nerve dysfunction included bilateral facial paralysis, spontaneous horizontal nystagmus (fast phase to the left), diminished tongue tone (without appreciable atrophy), right nasofacial hypalgesia, and pharyngeal dysphagia. General proprioceptive deficits were present in the right thoracic and pelvic limbs, while extensor tone was present in the left thoracic and pelvic limb muscles.