QUIZ: where is the cranial nerve lesion? Flashcards
Patient presents with loss of taste and sense of smell in his left nostril.
Where is the cranial nerve lesion?
CN I - olfactory
Left side
Patient presents with right sided hemianopia and she struggles to read due to blurry vision in her right eye.
OE: she has a fixed dilated pupil on the right side
Where is the cranial nerve lesion?
CN II - optic
Left side? (should be contralateral?)
Patient presents with a deviation of his left eye downwards and outwards.
His left eyelid is also drooping, he struggles to open it fully.
Where is the cranial nerve lesion?
CN III - oculomotor
Left side?
Patient presents with double vision when she looks down and inwards, she has a head tilt towards the left hand side.
Where is the cranial nerve lesion?
CN IV - trochlear
Right side, as head tilts away from the side of the lesion
Patient presents with numbness in the right side of his face, when he opens his mouth his jaw deviates to the right side.
Where is the cranial nerve lesion?
CN V - trigeminal
Right side, jaw deviates to affected side
Patient presents with horizontal double vision, her left eye is deviated inwardly.
Where is the cranial nerve lesion?
CN VI - abducens
Left side
Patient presents with facial weakness and cannot raise his left eyebrow. He also says he finds it hard to distinguish between different tastes.
Where is the cranial nerve lesion?
CN VII - facial
Left side, upper motor neuron
Patient presents because she feels as if her forehead is unable to move on the right side.
Where is the cranial nerve lesion?
CN VII - facial
Right side, lower motor neuron
Patient presents with deafness in his right ear and tinnitus, in his youth he was a big fan of heavy metal rock bands and frequently went to gigs.
Where is the cranial nerve lesion?
CN VIII - vestibulocochlear
Right side
Patient presents because she keeps choking on food.
Where is the cranial nerve lesion?
Either CN IX - glossopharyngeal
CN X - Vagus
Patient presents because he thinks his voice has become more nasal, and yesterday he was drinking his coffee and some had regurgitated from his nose.
Where is the cranial nerve lesion?
CN X - Vagus
Patient presents when she sees in the mirror that her neck on the right side appears larger than on the left.
OE you see the same on her shoulders from the back
Where is the cranial nerve lesion?
CN XI - accessory
Left side, weakness and wasting makes them appear smaller on the left
Patient presents with fasciculations on his tongue.
OE you see the tongue deviates the to the left side.
Where is the cranial nerve lesion?
CN XII - hypoglossal
Left side
