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A practical
approach to
dizziness
Michael Gilchrist, MD MPH
8/17/09
Case
71 year old female with hypertension
present to clinic with “dizziness”.
What questions would you ask?
Dizziness
Common primary care complaint
Vertigo, presyncope, disequilibrium,
other
Outline
Presyncope
Vertigo
Causes
Characteristics of different causes
History and physical
Warning signs
How to approach the patient?
“I’m dizzy”
Non-specific term
Vertigo and psychiatric causes make up
the majority of cases seen in clinic
setting (55-70%)
Multicausal, presyncope, unknown,
hyperventilation
Presyncope
Prodromal symptom of fainting
Usually occurs when patient is standing
or upright, not supine
Orthostatic hypotension, cardiac
arrhythmias, vasovagal attacks most
common
Other causes
Parkinson’s disease
Peripheral neuropathy
Hyperventilation
Medications
Hypoglycemia
Psychiatric disorders
Vertigo vs. presyncope
Positional vertigo and postural
presyncope often confused
Both can occur when someone goes
from sitting to standing
Vertigo (especially BPPV) can be
provoked with maneuvers that move
the head without changing BP
Vertigo
Dysfunction of vestibular system
(central vs. peripheral)
Vertigo
Illusion of motion
Self-motion
Motion of the surrouding environment
“spinning”, “tilting”, “moving”
All vertigo is made worse by moving the
head.
The history…
Patient description (“spinning”
sensation, however is non-specific)
Time course
Vertigo is rarely described as continuous.
Hearing loss? If so, duration and
progression, unilateral vs. bilateral,
tinnitus, sx of otitis
Causes of Vertigo
Peripheral
Benign positional vertigo
Vestibular neuritis
Herpes zoster oticus
Meniere’s disease
Labyrinthine concussion
Cogan’s syndrome
Acoustic neuroma
Aminoglycoside toxicity
Otitis media
Central
Migrainous vertigo
Brainstem
TIA
Wallenberg’s
syndrome
Cerebellar infarcation
or hemorrhage
Chiari malformation
MS
BPV
Most commonly recognized form of vertigo
Attributed to calcium debris within the
semicircular canal (canalithiasis)
“I feel like the room is spinning when I turn
my head”
Lasts seconds, but pt may feel destabilized
for hours after an attack
No ear pain, tinnitus, or hearing loss
BPV (cont.)
Diagnosis usually made by history
Dix Hallpike maneuver
Positive in 50-80% of patients
Canalith repositioning maneuvers
Medical therapy usually not helpful due
to transient symptoms
Vestibular neuritis
Viral or postviral inflammatory disorder
Rapid onset of severe persistent
vertigo with nausea, vomiting, ataxia
Sometimes combined with unilateral
hearing loss (labyrinthitis)
Steroid taper.
Dramamine, meclizine (H1 blockers),
benzodiazapines
Herpes zoster oticus
AKA Ramsay Hunt syndrome
Activation of latent herpes zoster
infection
Vertigo + hearing loss, ipsilateral facial
paralysis, ear pain, vesicles
Antiviral therapy
Meniere’s disease
Excess endolymphatic fluid pressure
Episodic, acute vertigo, lasts minutes to
hours
Unilateral tinnitus, hearing loss, ear fullness
Treatment
Salt, caffeine, tobacco restriction
Diuretics
Surgical
Labryinthine concussion
Traumatic vestibular injury following
head trauma
Transverse fractures of the temporal
bone
Cogan’s syndrome
Autoimmune
Similar to Meniere’s: veritgo, ataxia,
nausea, vomiting, tinnitus, hearing loss
“oscillopsia”: perception of objects
jiggling after abruptly turning the head
Acoustic neuroma
Slow growing tumor
Patients often experience mild vertigo
or no vertiginous symptoms at all
Unilateral tinnitus and hearing loss
MRI brain
Otitis media
Fever, hearing loss, nausea, vomiting
If pt has pain with tragal stimulation,
consider CT scan of face to evaluate for
labryinthine fistula in the temporal bone
Peripheral causes
Benign positional vertigo - most common, no
hearing loss
Vestibular neuritis - sometimes hearing loss
Herpes zoster oticus (Ramsay-Hunt)
Meniere’s disease - unilateral hearing loss
Labyrinthine concussion
Cogan’s syndrome - autoimmune
Acoustic neuroma - often minimal vertigo
Aminoglycoside toxicity
Otitis media
Central causes…
Migrainous vertigo
Can have central and peripheral
manifestations
Diagnosis made by history (aura,
headache
Sometimes associated with migraine
headaches
Brainstem ischemia
Vertebrobasilar arterial system
Rarely the sole manifestion, however
MRI brain
Wallenberg’s syndrome
Lateral medullary infarction
Posterior inferior cerebellar artery
Oftentimes concurrent
Ocular movements
Ipsilateral Horner’s syndrome
Ipsilateral limb ataxia
Sensory loss
Hoarseness, dyphagia (CN IX)
Cerebellar
infarction/hemorrhage
Sudden intense persistent vertigo with
nausea and vomiting. Pronounced gait
abnormalities
Pt falls toward the side of the lesion
Typically older pts (>60 y/o) with CV
risk factors
Warning signs
Suggestions of central vestibular
disease or brainstem lesions
Persistent vertigo
Ataxia
Nausea/vomiting
Headache
Vision loss, diplopia
Slurred speech
Vertigo, physical exam
findings
Nystagmus
Hallpike maneuver
Move patient rapidly from sitting to lying
position, head tilted downward of facing
you
The Dix-Hallpike Test of a Patient with Benign Paroxysmal Positional Vertigo Affecting the Right
Ear
Furman J and Cass S. N Engl J Med 1999;341:1590-1596
Central vs. Peripheral Vertigo
Peripheral
Nystagmus unidirectional, horizontal with a
torsional component
Other neurologic signs absent
Deafness or tinnitus may be present
Central
Nystagmus can be in any direction
Other neurological signs often present
Gait instability
Deafness or tinnitus typically absent
Often less severe
More likely to be chronic, not episodic
High yield historical questions
Subjective description, avoid leading
questions
Duration/frequency of symptoms
Triggering factors
Associated nausea/vomiting?
Hearing loss or tinnitus?
Any other neurological complaints
Recent viral illness, fever, systemic
symptoms?
New medications?
Physical exam
Neurological exam
Check for nystagmus with and without
Dix-Hallpike
Ear exam
Gait
Cardiovascular exam