👉 > 50. F > M.
👉 5th CN : facial sensory / motor
👉Trigeminal neuralgia: Sudden,severe stabbing/ jabbing / lancinating / electric shock like pain,
👉2, 3rd div, Unilateral, lasting seconds to few minutes. Multiple episodes lasting for hours.
👉Aggravated by any touch, cold wind draft, jaw movement.
👉 Causes: 80% SCA superior cerebellar a wrapped around the nerve exiting the brain stem. Others : Dental abscess, TMJ, strokes, multiple sclerosis, trauma, tumor, AV malformation, Temporal arthritis, post herpetic neuralgia, glossopharyngeal neuralgia.
Meds: carbamazepine, ox carbamazepine, Baclofen, Lamotrigine, Phenytoin, gabapentin, Pregablin, amitriptyline, Pimozide, Clonazepine, Lidocaine, Duloxetine,
✂️Surgical option if meds failed:
👉Microvascular decompression : 75% effective, complicated with facial numbness. Prevents further myelin sheath damage.
👉Radiofrequency thermocoagulation Rhizotomy: damage the nerve. No GA gen anesthesia needed.
👉Steriotactic radiosurgery: focal radiation therapy. No GA needed.
👉Percutaneous needle / catheter : damaging area where nerve branches. Done in elderly, poor surgical candidate.
👉Baloon compression: inflating damaging the nerve.