Peripheral Vertigo Diagnosis and Characteristics
Key Distinguishing Features
- Auditory symptoms, including tinnitus, fluctuating hearing loss, and aural fullness, are hallmark features of peripheral vestibular pathology, according to the American Academy of Otolaryngology-Head and Neck Surgery 1, 3
- The American College of Radiology recommends considering vestibular neuritis, labyrinthitis, benign paroxysmal positional vertigo (BPPV), and Ménière's disease as common peripheral causes of vertigo 4, 5
- Horizontal or horizontal-rotatory nystagmus suggests a peripheral cause, as stated by the American Academy of Otolaryngology-Head and Neck Surgery 2
- The presence of tinnitus, hearing loss, or aural fullness strongly favors a peripheral cause, according to the American Academy of Otolaryngology-Head and Neck Surgery 1, 3
Clinical Evaluation
- The American College of Radiology suggests that the presence of cranial nerve deficits, such as diplopia, dysphagia, or dysarthria, indicates a central cause requiring urgent neuroimaging 4, 5
- Isolated vertigo without focal neurologic signs is likely peripheral, but 11-25% may still have posterior circulation stroke, as noted by the American College of Radiology 4, 6
- The American Academy of Otolaryngology-Head and Neck Surgery states that pure vertical nystagmus strongly suggests a central cause 1, 2
Critical Considerations
- The American College of Radiology advises against assuming a normal neurologic examination excludes stroke, as up to 75-80% of patients with acute vestibular syndrome from posterior circulation infarction may lack focal neurologic deficits 4, 6
- The American Academy of Otolaryngology-Head and Neck Surgery recommends considering imaging in patients over 50 years with vascular risk factors, or when severe imbalance is out of proportion to vertigo, suggesting cerebellar involvement 4
- The American College of Radiology suggests that a HINTS examination suggesting central cause, including absent head impulse test, direction-changing nystagmus, or vertical skew deviation, warrants imaging 4, 5