| Sign or Symptoms | Central (C) or Peripheral (P) Vertigo |
|---|
| Fall toward the slow phase | |
| Chronic duration of symptoms | |
| Visual fixation inhibits nystagmus and vertigo | |
| Marked severity of vertigo | |
| Finite symptoms (minutes, days, weeks) but recurrent | |
| Tinnitus usually absent | |
| Spin toward fast phase | |
| Bidirectional or Unidirectional nystagmus | |
| Caused by BPPV, infection (labyrinthitis), Menieres neuronitis, ischemia, trauma, toxin | |
| | Sign or Symptoms | Central (C) or Peripheral (P) Vertigo |
|---|
| No inhibition of visual fixation | |
| Common causes: vascular, demyelinating, neoplasm | |
| Mild vertigo | |
| Unidirectional fast phase nystagmus | |
| Tinnitus often present | |
| Vertical or purely torsional nystagmus may be present | |
| Purely horizontal nystagmus may be present | |
| Associated CNS abnormalities - diplopia, hiccups, cranial neuropathies, dysarthria | |
|
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