Trochlear Nerve Diseases

Overview

Diseases of the fourth cranial (trochlear) nerve or its nucleus in the midbrain. The nerve crosses as it exits the midbrain dorsally and may be injured along its course through the intracranial space, cavernous sinus, superior orbital fissure, or orbit. Clinical manifestations include weakness of the superior oblique muscle which causes vertical DIPLOPIA that is maximal when the affected eye is adducted and directed inferiorly. Head tilt may be seen as a compensatory mechanism for diplopia and rotation of the visual axis. Common etiologies include CRANIOCEREBRAL TRAUMA and INFRATENTORIAL NEOPLASMS.

This information is general and should not be treated as medical advice. Always speak directly with a qualified healthcare professional before making decisions about treatment, diagnosis, procedures, medicines or care.

Quick facts about Trochlear Nerve Diseases

Topic type

Condition

Category

Neurology

MeSH classification

C10.292.850

Preparing for an appointment about Trochlear Nerve Diseases

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• Write down your symptoms and when they started.
• Bring details of any medicines, supplements or previous treatments.
• Ask what tests or assessments may be needed.
• Ask what treatment or management options may be suitable.
• Ask when you should seek urgent medical help or follow-up care.

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