Trigeminal Neuralgia: Relief Technique, Trigeminal Neuralgia (TN) is a chronic pain disorder that affects the trigeminal nerve, which carries sensation from the face to the brain. Often described as Vitamin B12 and Alpha Lipoic Acid for Trigeminal Neuropathy Trigeminal neuralgia Nature Reviews Disease Primers Optineuron Injection for Nerve Pain & Vitamin Deficiency Injection of botulinum toxin type A (BOTOX) into path of trigeminal nerve to control the pain