Other cranial nerves Flashcards
Central causes of trigeminal nerve palsy?
LOSS OF ALL FACIAL SENSATION
Vascular Tumour Vascular MS Syringobulbia
Peripheral causes of trigeminal nerve palsy?
LOSS OF SENSATION IN 1 DIVISION
Aneurysm Tumour Chronic meningitis Sjorgens SLE Toxins Idiopathic
Causes of a cavernous sinus lesion - CNIII, IV, V and VI palsies
Aneurysm
Thrombosis
Tumour
Loss of facial pain and temperature only with preservation of light touch?
Medullary CNV lesion
Loss of facial light touch only with preserved pain and temperature?
Pontine CNV lesion
Loss of ipsilateral corneal reflex with preserved blink of opposite eye?
Ipsilateral VII nerve palsy
Intact CNV
Central causes of Seventh nerve palsy?
Vascular
Tumour
LMN causes of VII nerve palsy?
Acoustic neuroma Meningioma Bell's palsy Ramsey-hunt syndrome OM Fracture of temporal bone Parotid tumour Sarcoidosis
Causes of CN V, Vi and VII palsies
PONTINE LESIONS Vascular Tumour Syringobulbia MS
Causes of bilateral LMN CN VII palsies and weakness?
GBS Bilateral parotid disease Mononeuritis multiplex Neuromuscular junction diseases Myopathies
Causes of sensorineural deafness?
Degeneration Trauma Toxic Infection Tumour Brain stem lesions Vascular disease
Causes of conductive deafness?
Wax
OM
Otosclerosis
Paget’s disease of the bone
Central causes of ninth and tenth nerve palsies?
Vascular
Tumour
Syringobulbia
MND
Peripheral causes of a ninth and tenth nerve palsies?
Aneurysm
Tumour
Chronic meningitis
GBS
What is psuedobulbar palsy?
Bilateral UMN lesions of IX, X and XII nerves
Causes of UMN XII nerve palsy?
Vascular
MND
Tumour
MS
Causes of unilateral LMN XII nerve palsy?
Vascular - thrombosis, aneurysm MND Syringobulbia Tumour Chronic meningitis Trauma Arnold-Chiari malformation Fracture or tumour of the base of skull
Causes of bilateral LMN XII nerve palsy?
MND
Arnold-Chiari malformation
GBS
Polio
What is Arnold-Chiari Malformation?
Protrusion of the cerebeller tonsils through the foramen magnum.
- -> lower cranial nerve palsies
- -> cerebellar limb signs
- -> UMN signs in the legs
Causes of multiple cranial nerve palsies?
CANCER!!! chronic meningitis GBS Brain stem lesions - vascular lesions Arnold-Chiari malformation Trauma Lesion at base of skull Mononeuritis multiplex
