| http://www.w3.org/ns/prov#value | - These are (1) cochlear-vestibular symptoms, including vertigo, tinnitus, and nerve deafness; (2) vascular headache, usually unilateral and pounding in character with or without an aura and frequently associated with blackout spells; (3) visual symptoms of the perceptive type including diplopia, visual claudication, and transient bilateral field defects; and, finally, (4) numbness and paresthesia o
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