random neuro facts

Question 1

What is pseudobulbar paresis?

Answer 1

Caused by MS. Caused by dysarthria, dysphagia, impaired mvmt of tongue and face.

Question 2

What is parinaud syndrome?

Answer 2

Dorsal midbrain syndrome. Can be caused by pineal gland tumors, MS, stroke.

• Paralysis of upgaze
• pseudo-argyll-robertson pupils: accomodation, no light reflex, no convergence
• eyelid retraction
• conjugate down-gaze

Question 3

What is the result of bilateral destruction of the amygdalae? Which bug?

Answer 3

Kluver-Bucy syndrome

Hyperphagia, visual agnosia, aphasia, hypersexuality

HSV-1 encephalitis, rarely

Question 4

cushing’s reflex - elevated ICP

Answer 4

1. hypertension - increased ICP compromises O2 delivery to brain and causes increased blood supply
2. bradycardia - due to pressure on medulla
3. irregular breathing - due to pressure on medulla