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Oculopalatal tremor with tardive ataxia.
E Eggenberger1, W Cornblath, D H Stewart
1Michigan State University Colleges of Osteopathic Medicine and Human Medicine, Department of Neurology and Ophthalmology, East Lansing 48824-1313, USA.
Summary
Oculopalatal tremor, a condition involving eye and palate movements, can develop delayed ataxia after brainstem lesions. This study highlights this significant, disabling complication in three patients.
Area of Science:
- Neurology
- Neuroscience
- Ophthalmology
Background:
- Oculopalatal tremor (OPT) is characterized by palatal tremor and pendular nystagmus.
- OPT can manifest with a delay following acute brainstem lesions.
- Delayed symptoms typically affect ocular and branchial muscle-derived structures, like the palate.
Observation:
- This report details three cases where patients with OPT developed delayed-onset ataxia.
- The ataxia significantly impacted patient function, becoming disabling.
- These cases followed acute, larger bilateral brainstem lesions.
Findings:
- The development of delayed-onset ataxia is a potential complication of oculopalatal tremor.
- Brainstem lesions, particularly larger bilateral ones, may predispose individuals to this delayed sequela.
- Sparing of the inferior olive was noted in these cases, suggesting its role in preventing this complication.
Implications:
- Recognizing delayed-onset ataxia as a complication of OPT is crucial for patient management.
- Further research into the pathophysiology linking brainstem lesions, OPT, and ataxia is warranted.
- This finding expands the understanding of long-term neurological deficits following brainstem injury.