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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

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a practical approach to dizziness

A practical approach todizziness

Michael Gilchrist, MD MPH

8/17/09

slide2
Case
  • 71 year old female with hypertension present to clinic with “dizziness”.
  • What questions would you ask?
dizziness
Dizziness
  • Common primary care complaint
  • Vertigo, presyncope, disequilibrium, other
outline
Outline
  • Presyncope
  • Vertigo
    • Causes
    • Characteristics of different causes
  • History and physical
  • Warning signs
  • How to approach the patient?
i m dizzy
“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
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
Other causes
  • Parkinson’s disease
  • Peripheral neuropathy
  • Hyperventilation
  • Medications
  • Hypoglycemia
  • Psychiatric disorders
vertigo vs presyncope
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
Vertigo
  • Dysfunction of vestibular system (central vs. peripheral)
vertigo1
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
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

Causes of Vertigo
slide14
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
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
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
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
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
Labryinthine concussion
  • Traumatic vestibular injury following head trauma
  • Transverse fractures of the temporal bone
cogan s syndrome
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
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
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
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
migrainous vertigo
Migrainous vertigo
  • Can have central and peripheral manifestations
  • Diagnosis made by history (aura, headache
  • Sometimes associated with migraine headaches
brainstem ischemia
Brainstem ischemia
  • Vertebrobasilar arterial system
  • Rarely the sole manifestion, however
  • MRI brain
wallenberg s syndrome
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
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
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
Vertigo, physical exam findings
  • Nystagmus
  • Hallpike maneuver
    • Move patient rapidly from sitting to lying position, head tilted downward of facing you
slide32

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
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
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
Physical exam
  • Neurological exam
  • Check for nystagmus with and without Dix-Hallpike
  • Ear exam
  • Gait
  • Cardiovascular exam
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