Trigeminal Nerve Block

mage-guided anesthetic and neurolytic block of the trigeminal nerve and its branches for trigeminal neuralgia, facial pain syndromes, and refractory headache — performed by Tzvi Grossman, MD.

Precision Block for the Most Intense Facial Pain

Trigeminal neuralgia — often described as the most painful condition known in medicine — is caused by abnormal activation of the trigeminal nerve (cranial nerve V), producing electric shock-like facial pain triggered by ordinary activities such as eating, speaking, or touching the face. When medication alone is insufficient, image-guided trigeminal nerve blocks offer targeted relief by interrupting nerve transmission at the branch or ganglion level.

Dr. Grossman performs trigeminal nerve blocks with fluoroscopic and/or ultrasound guidance, accessing the nerve at peripheral branch levels (supraorbital, infraorbital, mental foramina) or at the Gasserian ganglion via the foramen ovale approach for more proximal, durable effects.

Conditions Treated

  • Trigeminal neuralgia (classic and atypical)
  • Post-herpetic neuralgia of the face
  • Trigeminal autonomic cephalalgias
  • Neuropathic facial pain after dental procedures
  • Hemifacial pain syndromes
  • Refractory headache with facial component

Block Targets

  • V1 (Ophthalmic): Supraorbital / supratrochlear foramen block
  • V2 (Maxillary): Infraorbital foramen or pterygopalatine fossa
  • V3 (Mandibular): Mental foramen or foramen ovale
  • Gasserian Ganglion: Foramen ovale approach under fluoroscopy — broadest coverage

Procedure Approach

  • Peripheral blocks: ultrasound-guided at foramen level
  • Gasserian block: fluoroscopy (± CT) via foramen ovale — contrast confirmed
  • Radiofrequency thermocoagulation of Gasserian ganglion available for longer-duration relief
  • Glycerol rhizotomy option for appropriate candidates

Expected Results

  • Immediate diagnostic relief with anesthetic block
  • Prolonged relief with neurolytic or RFA approaches
  • Series of peripheral blocks: cumulative benefit over weeks to months
  • Complements medication management (carbamazepine, oxcarbazepine, gabapentinoids)