Abnormal Head Impulse Test in a Unilateral Cerebellar Lesion
Journal of Clinical Neurology
;
: 279-282, 2015.
Article
Dans Anglais
| WPRIM
| ID: wpr-96074
ABSTRACT
BACKGROUND:
The findings of head impulse tests (HIT) are usually normal in cerebellar lesions. CASE REPORT A 46-year-old male presented with progressive dizziness and imbalance of 3 weeks duration. The patient exhibited catch-up saccades during bedside horizontal HIT to either side, which was more evident during the rightward HIT. However, results of bithermal caloric tests and rotatory chair test were normal. MRI revealed a lesion in the inferior cerebellum near the flocculus.CONCLUSIONS:
This case provides additional evidence that damage to the flocculus or its connections may impair the vestibulo-ocular reflex only during high-speed stimuli, especially when the stimuli are applied to the contralesional side. By observing accompanying cerebellar signs, the abnormal HIT findings caused by a cerebellar disorder can be distinguished from those produced by peripheral vestibular disorders.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Saccades
/
Réflexe vestibulo-oculaire
/
Épreuves vestibulaires caloriques
/
Imagerie par résonance magnétique
/
Maladies du cervelet
/
Cervelet
/
Vertige
/
Sensation vertigineuse
/
Test d'impulsion rotatoire de la tête
Limites du sujet:
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Journal of Clinical Neurology
Année:
2015
Type:
Article
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