Orofacial Pain attributed to lesion or disease of CNs

Question 1

give 2 conditions resulting from pain attributed to disease of trigeminal nerve

Answer 1

Trigeminal Neuralgia
painful trigeminal neuropathies

Question 2

give 2 conditions resulting from pain attributed to disease of glossopharyngeal nerve

Answer 2

glossopharyngeal Neuralgia
painful glossopharyngeal neuropathies

Question 3

how does TN present?

Answer 3

unilateral severe electric shock like pain that recurs
pain lasts up to 2 mins
limited to one or more divisions of CN5 (no radiation beyond division)
triggered by non-harmful stimuli within CN5 division
may be accompanied by continuous pain within CN5 distributions

Question 4

give 3 types of TN and causes for each

Answer 4

classical - caused by vascular compression
secondary - caused by underlying disease
idiopathic - no apparent cause

Question 5

what radiograph should be done to investigate TN?

Answer 5

high resolution MRI

Question 6

what warrants refferal of TN pt?

Answer 6

sensory/motor deficits
deafness or other ear problems
optic neuritis
hx of malignancy
bilateral TN pain
systemic symptoms - fever, weight loss
presentation in <30yr olds