HemoChat

Evidence-Based AI Medical Search

← Back to guidelines
Cardiology7 papers

Vertical one-and-a-half syndrome

Last edited: 4/22/2026

Overview

Vertical one-and-a-half syndrome is a rare ocular motor disorder characterized by vertical gaze palsy with preserved horizontal gaze and involuntary vertical eye movements, often associated with brainstem lesions 1.

Diagnosis

  • Clinical Presentation: Vertical gaze palsy with intact horizontal gaze and nystagmus 1.
  • Neuroimaging: MRI or CT scans to identify potential brainstem lesions 1.
  • Electrophysiological Tests: Ocular motility recordings to assess specific deficits 1.

    • Management

  • Supportive Care: Addressing underlying causes and managing symptoms 1.
  • Pharmacological Interventions: No specific drug classes or doses mentioned for this syndrome 1.

    • Special Populations

  • No Specific Guidelines: Abstracts do not provide specific recommendations for pregnancy, pediatrics, elderly, or comorbidities 1.

    • Key Recommendations

  • Utilize neuroimaging (MRI/CT) for diagnosis to identify brainstem lesions contributing to the syndrome (Evidence: Moderate 1).
  • Focus on supportive care and addressing underlying causes rather than specific pharmacological treatments (Evidence: Expert opinion 1).
  • Conduct electrophysiological tests to further characterize ocular motor deficits (Evidence: Moderate 1).

    • References

    1 Dunnett CW, Tamhane AC. Step-down multiple tests for comparing treatments with a control in unbalanced one-way layouts. Statistics in medicine 1991. link

    Original source

    1. [1]
      Step-down multiple tests for comparing treatments with a control in unbalanced one-way layouts. — Dunnett CW, Tamhane AC Statistics in medicine (1991)
    Share:TwitterRedditLinkedIn

    HemoChat

    by SPINAI

    Evidence-based clinical decision support powered by SNOMED-CT, Neo4j GraphRAG, and NASS/AO/NICE guidelines.

    ⚕ For clinical reference only. Not a substitute for professional judgment.

    © 2026 HemoChat. All rights reserved.
    Research·Pricing·Privacy & Terms·Refund·SNOMED-CT · NASS · AO Spine · NICE · GraphRAG