Fifty-four-year-old Fred is complaining of a headache that started about 2 weeks ago. For the past 2 days, the headache has increased in severity, and he is photophobic and has Nuchal rigidity and projectile vomiting. CT scan results show an arteriovenous malformation in the basal artery and a small hemorrhagic bleed in the middle meningeal artery.
1. How is the concept of â€œdisorders of brain functionâ€ related to Fredâ€™s presenting symptoms?
2. What aspects of cerebral circulation would come into play in Fredâ€™s case?