Reset Ketamine October 8, 2018 Alternative Therapies, Chronic Pain, Ketamine Ketamine for Trigeminal Neuralgia Reset Ketamine October 8, 2018 Alternative Therapies, Chronic Pain, Ketamine Trigeminal neuralgia (also known as tic douloureux) is a chronic pain condition affecting the fifth cranial nerve (1). There are twelve cranial nerves that emerge from the brain and cranial nerve V carries sensation from the face to the brain.