What workup do you recommend on patients with suspected ischemic cranial nerve six palsy?

The conventional wisdom is that 90% of isolated ischemic (or "vasculopathic") 6th nerve palsies recover in 6 months or less. Diagnostic certainty of this etiology is increased if the patient is hypertensive, diabetic, or maybe has hyperlipidemia or tobacco use.

The real problem for the non-ophthalmi...