Oral Med Tutorial 3 Flashcards
describe trigeminal neuralgia
sudden usually unilateral breif stabbing recureent episode of pain occuriring in one or more of the trigeminal branches
what ae the classifications of TN
idiopathic
primary
secondary
what is the epidemiology of TN
higher incidence in women
maxillary and mandibular branches of trigeminal nerve more common than ophthalmic
what is the aetiology of TN
compression of neurovascular of trigeminal root entry area
resulting in demyelination of nerve fibres which start firing abnormally
name four clinical features of TN
unilaterally maxillary or mandibular pain
stabbing/ electric like
5-10 seconds duration
triggers are touch/ wind/ cold
what special investigation can aid diagnoses of subtype of TN
MRI
what can occur with TN paroxysms over time
pain becomes more severe
attacks last for longer
name three differential diagnoses for TN
painful trigeminal neuropathy (post herpetic neuralgia)
trigeminal autonomic cephalalgias (eg cluster headaches)
TMJ syndrome
what is odontogenic pain
nociceptive pain felt due to activity in neural pathways in response to stimuli (tissue damage/ inflammation)
what is neuropathic pain
caused by damage to the nerve or dysfunction of the nerve
name the first line pharmacological treatments for TN
carbamazepine
oxcarbazepine
