Neurology

Question 1

How long should someone stop driving after a stroke or TIA?

Answer 1

1 month

Question 2

What are the features of Wernicke’s Encephalopathy?

Answer 2

CAN OPEN

• C = Confusion
• A = Ataxia
• N = Nystagmus
• O = Opthalmoplegia
• PE N = Peripheral Neuropathy

Question 3

What is the most specific MRI finding for Wernicke’s Encephalopathy?

Answer 3

Enhancement of the mamillary bodies

Due to petechial haemorrhage

Question 4

Which cranial nerve innervates the lateral rectus muscle?

Answer 4

Sixth cranial nerve

Lateral rectus = responsible for moving eye laterally - palsy of CN6 therefore causes restricted lateral gaze.
May present as horizontal diplopia.

Question 5

What is the finding on examination in relative afferent pupillary defect?

Answer 5

The affected eye and the normal eye both dilate when light is shone on the affected eye

Question 6

What are the features of an essential tremor?

Answer 6

• Affects both upper limbs
• Worse if arms outstretched
• Improved by alcohol

Autosomal dominant inheritance -
It is Essential to Dominate Tremors