Third Cranial Nerve Palsy Flashcards
1
Q
What could damage to the third cranial nerve (oculomotor nerve) be a sign of?
A
- aneurysm in the posterior communicating artery
2
Q
What are the symptoms / signs of CNIII palsy?
A
- eyed down and out position
- pain
- diplopia
- Ptosis
- pupil dilation
3
Q
What is the position of the eye in a CN3 nerve palsy?
A
down and out
4
Q
A patient presents with ptosis and dilation of the eye - what nerve palsy is this?
A
CN3
5
Q
A patient presents with an eye that is positioned down and out - what nerve palsy is this?
A
CN3
6
Q
What are the differentials of CN3 palsy?
A
- myasthenia gravis
- thyroid eye disease
- giant cell arteritis
7
Q
What are the symptoms of cranial nerve 6 palsy?
A
- One eye turns inwards
- blurred / double vision
8
Q
What is the classical triad of horners?
A
- ptosis
- anhydrosis
- miosis (constriction of pupil)
9
Q
What are the causes of horners syndrome?
A
- Wallenberg’s syndrome
- ICA dissection / thrombosis
- subclavian artery aneurysm
10
Q
What does a painful neck and acute horners indicate?
A
Internal carotid artery dissection until proven otherwise
