Overview
Supranuclear paralysis refers to a group of disorders characterized by impaired eye movements due to lesions above the nuclei of cranial nerves III, IV, and VI, often affecting voluntary gaze control and coordination 1.Diagnosis
Key Diagnostic Criteria: Transient monocular rotary-vertical nystagmus 1.
Recommended Tests: Electrooculography (EOG) to assess gain of vertical pursuit and vestibulo-ocular reflex 1.
Clinical Findings: Decreased gain of vertical pursuit with normal vestibulo-ocular reflex suggests supranuclear brain stem involvement 1.Management
First-Line Treatments: Not specified in the provided abstracts.
Adjunctive Treatments: Not specified in the provided abstracts.Special Populations
Pregnancy: Not addressed in the provided abstracts.
Pediatrics: Not addressed in the provided abstracts.
Elderly: Not addressed in the provided abstracts.
Comorbidities: Not addressed in the provided abstracts.Key Recommendations
Evaluate patients with monocular rotary nystagmus using electrooculography to differentiate supranuclear lesions from other causes (Evidence: Moderate 1).
Consider supranuclear brain stem lesions in the differential diagnosis when there is decreased gain of vertical pursuit with normal vestibulo-ocular reflex (Evidence: Moderate 1).
Further research is needed to establish definitive management guidelines for supranuclear paralysis (Evidence: Expert opinion).References
1 Kattah JC, Cohan SL, Cahill W, Buas M. Monocular rotary nystagmus. Journal of clinical neuro-ophthalmology 1983. link