Pulsatile tinnitus
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Revision as of 21:34, 3 March 2021 by Aidan (talk | contribs) (Created page with "== Background == === Etiologies === * Arterial ** Stenosis (9-18%): includes atherosclerotic plaques, the most common cause in the elderly, and fibromuscular dysplasia *...")
Background
Etiologies
- Arterial
- Stenosis (9-18%): includes atherosclerotic plaques, the most common cause in the elderly, and fibromuscular dysplasia
- Aneurysm (1-4%), particularly of the internal carotid artery
- Anatomical variant (1-4%)
- Arteriovenous transition
- Dural arteriovenous fistula (7-8%)
- Direct arteriovenous fistula (2-3%)
- Arteriovenous malformation (0-1%)
- Vessel-rich tumour (5-15%)
- Capillary hyperemia (3-8%)
- Venous
- Intracranial hypertension (8-16%)
- Anatomical variant (12-14%)
- Other
- Semicircular canal dehiscence (0-5%)
- Other (4-8%)
- Unknown (20-23%)
Clinical Manifestations
- May be subjective (only heard by patient) or objective (also heard by physician)