Wrong statement about Bell’s palsy? – Medicine MCQ

Identify the wrong statement regarding Bell’s palsy:
A. It is the most common form of facial paralysis
B. Paralysis is usually preceded by pain behind the ear
C. MRI reveals swelling and enhancement of gasserian ganglion
D. Presence of incomplete paralysis in first week is the most favourable prognostic sign

Correct answer: C. MRI reveals swelling and enhancement of gasserian ganglion

Explanation:

Bell’s palsy is the most common form of facial paralysis.
It has abrupt onset.
The paralysis is usually preceded by pain behind the ear.
Maximum weakness occurs by 48 hours.
MRI may show swelling and uniform enhancement of geniculate ganglion and facial nerve.

Reference: Harrison’s Principles of Internal Medicine, 19 edition, p2647

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