Tier 1 — must know
Canine
Musculoskeletal / Nervous
High yield
Vestibular disease
Head tilt and nystagmus topic · central versus peripheral split · localization before speculation
⏱ 2–3 min read · Topic 24 of 33
5
Practice Qs
4
Traps
High
Exam freq.
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Your status
Study step
Exam core — read this first
Classic presentation → head tilt, pathologic nystagmus, vestibular ataxia, and nausea
Localization question → central versus peripheral is the high-yield split
Peripheral clues → normal mentation and no significant postural-reaction deficits in many cases
Central clues → proprioceptive deficits, altered mentation, or vertical nystagmus raise urgency
Clinical mechanism — only what matters
Vestibular asymmetry → creates the head tilt and falling/rolling behavior
Peripheral disease → involves inner ear or vestibular nerve structures
Central disease → involves brainstem/cerebellar pathways and is usually more concerning
The board is testing localization and next-step seriousness, not just naming “old dog vestibular.”
Pattern recognition
Core pattern
Head tiltNystagmusVestibular ataxia / falling to one side
Supporting clues
Nausea or vomitingRollingFacial nerve signs possible in peripheral ear diseaseNormal strength despite imbalanceOlder dog with acute onset idiopathic syndrome
NAVLE trigger: The localization question comes first. “Vestibular disease” is only the starting label.
Decision core — what NAVLE actually asks
Vertical nystagmus, proprioceptive deficits, or altered mentation
→ Treat as central vestibular disease until proven otherwise
Acute peripheral-style vestibular syndrome in an older dog
→ Idiopathic peripheral vestibular disease stays high on the list after exam and ear assessment
Evidence of ear disease or cranial-nerve involvement
→ Peripheral otic disease becomes more likely and workup/treatment should follow that path
Key interpretation
Nystagmus
High yield
Direction and behavior help localization
Postural reactions
Check carefully
Central lesions often add deficits
Mentation
Usually normal in peripheral disease
Abnormal mentation is more concerning
Vertical nystagmus
Central red flag
Major board clue
Facial paralysis / Horner
Supports peripheral
Local ear/nerve involvement clue
Nausea
Common
Supportive care often needed even if lesion is peripheral
⚠ Head tilt alone does not make a case benign. Central signs change the entire urgency and differential list.
Treatment
Step 1
Localize the lesion and provide anti-nausea / supportive nursing care
Many vestibular dogs need help before they need a final label.
Step 2
Treat underlying ear disease when present
Peripheral vestibular disease is not always idiopathic.
Step 3
Escalate central vestibular cases to advanced neurologic investigation
Central localization changes the seriousness of the case.
NAVLE traps — where students lose marks
Vestibular ataxia is not generalized paresis
The dog is unbalanced, not necessarily weak.
Idiopathic old-dog vestibular disease is common, but it is still a diagnosis of pattern and exclusion
Do not ignore central red flags.
Vertical nystagmus is a major central clue
This is one of the most tested localization findings.
Peripheral disease can still look dramatic
Rolling and vomiting do not automatically mean brain disease.
Differentials — how to separate these on NAVLE
Fast separator: First separate peripheral from central vestibular disease; then ask whether ear disease, idiopathic peripheral disease, or brainstem disease fits best.
| Problem | Mentation/postural reactions | Nystagmus clue | Key separator |
|---|---|---|---|
| Peripheral vestibular disease | Usually normal mentation / no major deficits | Horizontal/rotary common | Inner ear / vestibular nerve localization |
| Central vestibular disease | Deficits or altered mentation may be present | Vertical can occur | Brainstem/cerebellar localization |
| Seizure disorder | Post-ictal change | No persistent vestibular pattern | Different neurologic episode type |
| Cerebellar disease | Intention tremor / dysmetria | Not classic isolated vestibular syndrome | Different neuro localization clues |
| Orthopedic lameness | Normal neuro exam | No nystagmus/head tilt | Not a vestibular problem |
Clinical application tools
These are support references only; neurologic localization is the core of the real decision.
30-second revision
PatternHead tilt + nystagmus + vestibular ataxia
High-yield splitPeripheral vs central
Central red flagsVertical nystagmus, deficits, mentation change
Peripheral clueNo major proprioceptive deficits
Critical trapDramatic rolling does not automatically equal central disease
Practice questions
Pre-built NAVLE-style · Vestibular disease
0 / 0
Which clinical triad is most consistent with canine vestibular disease?
Which finding most strongly suggests central rather than peripheral vestibular disease?
Which statement is most accurate about peripheral vestibular disease?
What is an appropriate early management principle in a severely nauseated rolling vestibular dog?
Which statement about canine vestibular disease is most accurate?