Cranial Nerve 1

Question 1

Complete loss of smell

Answer 1

anosmia

Question 2

Is anosmia indicative of a cortical lesion?

Answer 2

no

Question 3

What things ARE indicative of a cortical lesion?

Answer 3

Perversion, hallucination, or diminution of smell

Question 4

Anosmia is more commonly associated with what?

Answer 4

Viral infections
Allergic rhinitis
Head trauma –> basilar skull fracture or cribriform plate fracture (or shearing of nerves with no fracture of CP)

Question 5

What is CSF drainage called?

Answer 5

rhinorrhea

Question 6

If the smell loss is bilateral it is indicative of what?

Answer 6

Common cold, injury, aging

Question 7

If the smell dysfunction is unilateral it is indicative of?

Answer 7

Unilateral frontal lesion or a cold

Question 8

Lesion of what area can cause hallucinations of smell associated with strong feelings of déjà vu?

Answer 8

uncinate gyros of the anterior temporal lobe

Question 9

What is a lesion of the uncinate gyrus causing hallucinations of smell called?

Answer 9

Uncinate fits or seizures

Question 10

A decreased sense of smell

Answer 10

hyposmia

Question 11

An increased sense of smell

Answer 11

hyperosmia

Question 12

A perversion of smell

Answer 12

parosmia

Question 13

Abnormally disagreeable smell.

Answer 13

cacosmia

Question 14

Clinically less frequent disorders of smell include what kinds of tumors that compress the olfactory tract or are in structures around the olfactory tract?

Answer 14

Frontal lobe tumors

meningiomas