MRCP UK EXAMINATIONS

CLINICAL ENCOUNTERS

BELLS PALSY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A patient with Bell’s palsy is known to have a disorder of which cranial nerve?
A
facial (VII)
B
trigeminal (V)
C
abducens (VI)
D
glossopharyngeal (IX)
Explanation: 

Detailed explanation-1: -Bell’s palsy is an unexplained episode of facial muscle weakness or paralysis. It begins suddenly and worsens over 48 hours. This condition results from damage to the facial nerve (the 7th cranial nerve).

Detailed explanation-2: -Moebius syndrome is a rare neurological disorder characterized by weakness or paralysis (palsy) of multiple cranial nerves, most often the 6th (abducens) and 7th (facial) nerves. Other cranial nerves are sometimes affected. The disorder is present at birth (congenital).

Detailed explanation-3: -Other causes of sudden one-sided facial nerve paralysis include a traumatic head injury, which may damage the seventh cranial nerve; a stroke, which occurs as a result of a loss of blood supply to the brain stem; a viral infection, such as herpes simplex or herpes zoster; or, more rarely, Lyme disease.

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