Cerebellar infarctions and 'vestibular neuritis'

Area of Science:

• Neurology
• Ophthalmology
• Vascular Medicine

Background:

• Sudden onset vertigo in individuals aged 50-75 without cochlear or neurological symptoms presents a diagnostic challenge.
• Cerebellar infarction and vertebral artery occlusion are potential causes that require accurate identification.
• Current diagnostic methods may not sufficiently differentiate causes of vertigo.

Purpose of the Study:

• To investigate neuro-imaging and eye movement abnormalities in older adults experiencing sudden vertigo.
• To determine the efficacy of various diagnostic tests, including Doppler sonography and eye movement recordings, in identifying cerebellar infarctions.
• To establish correlations between vertigo, cerebellar infarctions, vertebral artery occlusion, and cardio-embolic risk factors.

Main Methods:

• Neuro-imaging techniques were employed in consecutive subjects aged 50-75 with sudden vertigo.
• Doppler sonography of vertebral and carotid arteries was performed.
• Recordings included voluntary saccades, pursuit eye movements, and nystagmus (caloric, spontaneous, gaze, optokinetic).

Main Results:

• Cerebellar infarctions were identified in 6 out of 24 subjects.
• Vertebral artery occlusion was found in 2 subjects.
• Reduced pursuit eye movements were indicative of cerebellar infarction, while caloric tests were not.

Conclusions:

• Cerebellar infarction in patients with vertigo is associated with vertebral artery occlusion or cardio-embolic risk factors.
• Pursuit eye movement assessment is a valuable tool for diagnosing cerebellar infarction in vertigo patients.
• Patients presenting with vestibular neuritis symptoms should undergo pursuit eye movement testing and electrocardiogram (ECG) recordings.