BOF 26
A patient presented with an impaired facial sensation,
all are true causes, except:
1-disease in one cavernous sinus
2-cellebo pontine angle meningioma
3-leasion in the upper cervical cord
4-a small lesion in the posterior limb of the internal
capsule
5-idiopathic trigeminal neuralgia
Answer: 5
Facial sensation is usually badly examined in clinical
neurology, you should always be efficient in it, as it may reflect and
localize many CNS diseases.
1-V1 and V2 branches of the trigeminal nerve might be
affected
2-and others CP Angle lesions as in acoustic neuroma,
here loss of corneal reflex is an early feature, so use it as a screening
tool!!
3-C2 nerve supplies the angle of mandible, still a
facial area!!!
4-true…but with a hemisensory loss in the limbs(e.g.
pure sensory lacunar stroke)
5-keep it in mind: any neurological abnormality found
on examination e.g. facial anaesthesia, then it is not an idiopathic
trigeminal neuralgia
Revision Tip
Revise
abnormalities that may be detected on examination of the trigeminal nerve
ACES for PACES page 493-495
