Optineuron Injection for Nerve Pain & Vitamin Deficiency Botulinum Toxin (Botox) for Trigeminal Neuralgia Wilderman Clinic Trigeminal neuralgia is a rare but severe nerve condition of the face that disrupts daily life. Learn about the symptoms and treatment options. Injections for Trigeminal Neuralgia Elie Sader, MD TRIGEMINAL NERVE PAIN , Trigeminal Nerve , Starts from the brainstem , Has 3 main branches covering the face , Controls facial sensation and pain signals , Maxillary Branch (Middle Face) Cyanocobalamin (B12) Injection 1000 mcg mL, Multiple Dose Vial 30 mL McGuff