1. Vestibulocochlear (VIII) Nerve

2. Vestibulocochlear (VIII) Nerve

3. Vestibulocochlear (VIII) Nerve Unilateral sensorineural deafness tinnitus
loud noise
Ménière's disease
Pagets disease
Herpes zoster
neurofibroma
acoustic neuroma
brainstem CVA
lead
aminoglycosides
furosemide & aspirin

4. Vestibulocochlear (VIII) Nerve
Oculocephalic reflex
vestibular symptoms
vertigo is an illusion of motion in the form of a spinning or whirling sensation) It may be associated with Nausea, vomiting, oscillopsia
The presence of associated unilateral hearing loss and tinnitus or fullness in the ear suggests ear pathology.
Signs and symptoms referable to the brainstem, CNs, or cerebellum are indicative of a central lesion

5. Nystagmus To and fro movement of the eye due to defective control system of vision.
Jerk
Pendular

6. Vertigo Physiologic Pathologic Seasickness Extreme extension spin
Visual
Cerebellar
Vestibular (Labyrinthine)
Unilateral
Labyrinthitis
Trauma
Ischemia
Bilateral
Alcohol
drugs

7. Benign paroxysmal position vertigo
Nystagmus (in supine with the head turned to the affected ear Causes
tiny fragments of debris in the inner ear labyrinth
drug
strokes
tumors
Recurrent intense dizziness with a spinning sensation and unsteadiness when moving the head in certain directions (recumbent head position)

8. Benign paroxysmal position vertigo
Nystagmus peripheral central
Latency
3 – 40 sec
immediat e
Fatigability
yes no
Habituation
direction
uindirecti on
indirectio n
vertical
never
May be
Visual fixation
Inhibits vertigo
Not inhibited
CNS abnormality
none
common

9. Benign paroxysmal position vertigo
Treatment
Epley maneuver
Antihistamine (meclizine, prmethazine)
Benzodiazepine(diazepam, clonazepam)
Phenathiazines (prochlorperazine