Trochlear Nerve Diseases


Cranial Nerve IV Diseases

Fourth Cranial Nerve Diseases

Fourth Cranial Nerve Palsy

Fourth Nerve Palsies

Fourth Nerve Palsy

Myokymia, Superior Oblique

Myokymias, Superior Oblique

Neurogenic Superior Oblique Palsy

Neuropathies, Trochlear

Neuropathy, Trochlear

Palsies, Fourth Nerve

Palsies, Trochlear Nerve

Palsy, Fourth Nerve

Palsy, Trochlear Nerve

Superior Oblique Myokymia

Superior Oblique Myokymias

Superior Oblique Palsy, Neurogenic

Trochlear Nerve Disease

Trochlear Nerve Disorder

Trochlear Nerve Disorders

Trochlear Nerve Palsies

Trochlear Nerve Palsy

Trochlear Neuropathies

Trochlear Neuropathy

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.