CRPS & Trigeminal Neuralgia Flashcards Preview

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Flashcards in CRPS & Trigeminal Neuralgia Deck (11):

CRPS affects upper limbs more than lower limbs in...



CRPS affects lower limbs more than upper limbs in...



What is hyperalgesia?

Increased sensitivity to pain


What is allodynia?

Pain from a stimulus that is not normally painful


How does Type I CRPS differ from Type 2?

Type 1 - no evidence of nerve damage; used to be called RSD
Type 2 - evidence of nerve damage; used to be called causalgia


What is the clinical diagnostic criteria for CRPS?

- Continuing pain which is disproportionate to any inciting event
- 1 symptom in 3 of 4 categories:
Sensory: hyperesthesia and/or allodynia
Vasomotor: temp or skin color asymmetry
Sudomotor/edema: edema or sweating changes
Motor/trophic: decreased ROM or motor dysfunction


Spinal cord stimulator

- Electrode placed in epidural space over the dorsal column structure a few levels above the affected spinal segment
- Electrical pulses are delivered to the spinal cord to cause parasthesias in the region


What are the clinical features of trigeminal neuralgia?

Sudden, unilateral, evere, recurrent episodes of pain in the distribution of one or more branches of the trigeminal nerve. Pain occurs in paroxysms, does not awaken patients in the night and precipitated by light touch.


What are the causes of trigeminal neuralgia?

Idiopathic, compression of trigeminal nerve root, compression by an aberrant loop of an artery or vein.


What are some treatment options for trigeminal neuralgia?

- Anticonvulsants
- Microvascular decompression-craniotomy
- Rhizotomy
- Gamma knife radiosurgery


What is spinal facilitation?

Maintenance of a pool of neurons in a state of partial or sub threshold excitation; in this state, less afferent stimulation is required to trigger the discharge of impulses.