II. Findings: Suggestive of peripheral causes

  1. Pathognomonic for peripheral cause
    1. Sudden onset with brief episodes often on awakening
    2. Rotary Illusion with Nausea, Vomiting
  2. Nystagmus
    1. Combined horizontal and torsional Nystagmus
    2. Persists 5-20 seconds after Dix-Hallpike Maneuver
    3. Fixation of eyes on object inhibits Nystagmus
  3. Moderate imbalance
  4. Nausea or Vomiting
  5. Associated findings
    1. Hearing Loss
    2. Tinnitus
  6. Tullio's Phenomenon
    1. Nystagmus and Vertigo provoked by loud sounds

IV. Causes: Other (Peripheral Vertigo)

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