Our Philosophy on Pain Management
Baylor Medicine has long been a pioneer in functional neurosurgery, using targeted therapies to improve quality of life. Our multidisciplinary team provides personalized therapy for the treatment of various pain conditions.
Our approach to pain management focuses on providing the least-invasive treatment to improve quality of life.
- Comprehensive facial pain center offering microvascular decompression, percutaneous radiofrequency ablation and balloon compression and stereotactic radiosurgery
- Referral center for the management of cancer pain using both minimally invasive ablative techniques, including cordotomy and intrathecal drug delivery
- Top neuromodulation center for implantation of spinal cord stimulators, dorsal root ganglion stimulators, and intrathecal pumps
Disorders Treated
- Chronic pain
- Trigeminal neuralgia
- Cancer pain
- Spasticity
- Neck and back pain
Treatment Options
- Microvascular decompression
- Outpatient trigeminal neuralgia treatment
- Spinal cord stimulation
- Intrathecal drug delivery
- Stereotactic radiosurgery
Facial Pain
The proper management of facial pain conditions, including trigeminal neuralgia, is critically dependent on the ability of your neurosurgeon to provide you with a complete range of treatment options for your pain condition. At Baylor Medicine, our fellowship-trained physicians have deep expertise in a range of surgical procedures to provide the most personalized care for you.
A careful review of your symptoms and high-resolution 3T MRI scan focusing on the trigeminal nerve and nearby blood vessels can help your surgeon determine if a microvascular decompression may help with your facial pain. If a blood vessel may be the cause of your trigeminal neuralgia, both endoscopic and microscopic techniques can be used to decompress your trigeminal nerve to provide long-term benefit for your facial pain.
Though for many patients, microvascular decompression can provide the best long-term benefit for facial pain, there are many patients who choose to not undergo this treatment. This may be due to other conditions, such as multiple sclerosis, which would not be amenable to microvascular decompression, or due to a personal choice to pursue a less invasive option. For these patients, we have extensive experience in both radiofrequency ablation of the trigeminal nerve and balloon compression of the trigeminal nerve. Both of these techniques can provide immediate relief of pain from trigeminal neuralgia which will likely last for several years. Both these procedures are outpatient procedures which take about an hour in the operating room.
For patients who desire the least invasive option for the treatment of trigeminal neuralgia, we offer expertise in both Gamma Knife and CyberKnife radiosurgery. These outpatient procedures deliver a focused dose of radiation to the trigeminal nerve, and can provide symptomatic relief for those who are not candidates for microvascular decompression or percutaneous approaches.
Some facial pain conditions like trigeminal neuropathic pain may not respond to either microvascular decompression or percutaneous interventions. For this subgroup of patients, peripheral nerve stimulation can provide an effective and minimally invasive option for treating facial pain. Our team has a large clinical experience with craniofacial neuromodulation, and has participated in multi-center clinical trials studying peripheral nerve stimulation for refractory facial pain.
Chronic Pain
Intractable back and neck pain, which is not amenable to spine surgery, is one of the most significant health challenges in America. The negative long-term effects of chronic systemic opioid use have led to substantial investment in therapies to improve the quality of life in those suffering from chronic pain.
A broad range of complex pain conditions may be effectively treated through the electrical stimulation of the spinal cord. Recent, well-designed clinical trials have demonstrated the effectiveness of spinal cord stimulation in significantly reducing chronic back and leg pain. Spinal cord stimulation can be trialed using minimally invasive techniques to determine if this is an effective long-term therapy for the management of your pain condition. Both percutaneous and paddle-type electrodes can be used and are usually performed as outpatient procedures.
Increasing evidence has shown the spinal dorsal root ganglion to be an important structure in the development of chronic pain related to nerve injuries and complex regional pain syndrome. Targeted stimulation of this structure can provide relief to patients suffering from intractable knee pain, inguinal pain, and other focal pain syndromes. Like spinal cord stimulation, this is a therapy which can be trialed through a minimally invasive approach. Patients who have a positive trial can then undergo implantation of the permanent stimulator and battery.
Intrathecal drug delivery is another valuable technique in the treatment of spasticity, chronic pain conditions and pain related to cancer. This therapy can also be trialed using minimally invasive techniques to determine if intrathecal drug delivery may be a positive long-term intervention to restore your functionality. Through collaboration with our Physical Medicine and Rehabilitation and Interventional Pain Management, we can provide the optimal multidisciplinary care to trial and manage this therapy for our patients.
Cancer Pain
The management of pain associated with cancer often requires a different approach than we use for patients with other pain conditions. Our team has a highly unique experience in the management of cancer pain and closely collaborates not only with Baylor Medicine's Dan L Duncan Cancer Center but also with the MD Anderson Cancer Center to provide this expertise to their patients as well. Through minimally invasive techniques, it is possible to dramatically decrease pain associated with cancer and restore functionality.
The majority of pain travels in the spinal cord in a pain pathway named the spinothalamic tract. In patients who suffer from a focal pain due to cancer, interruption of the spinothalamic tract in the neck can provide immediate and meaningful pain relief. The procedure is performed in an operating room equipped with a CT scanner and an anesthesiologist present to ensure patient comfort. As the procedure is performed percutaneously (with a needle), it can be performed at any time during cancer treatment and at any stage of illness.
Visceral pain is one type of pain which does not travel in the spinothalamic tract. Visceral pain, like the pain due to pancreatic cancer or rectal cancer, travels in the dorsal columns visceral pain pathway. As with cordotomy, we are able to surgically interrupt this pain pathway in the spinal cord for patients with intractable pain due to abdominal and pelvic tumors. The procedure can either be performed through a short spine operation or in some cases may be performed percutaneously without an incision.
For patients with craniofacial tumors, pain can often reduce the quality of life substantially. For patients who have not obtained relief from the use of pain medication and cancer therapies, selective procedures to interrupt pain signals in the spinal cord can be used. By placing a needle in the neck, we are able to accurately and safely reduce pain transmission due to tumors affecting the head and neck.
Meet Our Team
Dr. Ashwin Viswanathan is a fellowship-trained expert in the neurosurgical treatment of pain. He is experienced with multiple techniques including stereotactic radiosurgery for treating trigeminal neuralgia (a disorder that results in intolerable pain on one side of the face).
Dr. Everton Edmondson is a neurologist who specializes in pain medicine. He received his medical training from New York University and completed an internship in internal medicine at the University of Connecticut. Following his residency at 91¹ú²úÊÓÆµ, Dr. Edmondson completed a fellowship in pain and neuro-oncology at University of Texas MD Anderson Cancer Center. Dr. Edmondson is board certified in neurology and pain medicine.
Dr. Krishna Shah is an anesthesiologist who specializes in interventional pain management. He earned his medical degree from The University of Texas Health Science Center at Houston and completed his residency in anesthesiology at 91¹ú²úÊÓÆµ. He also completed a fellowship in interventional pain management at Harvard Medical School’s Brigham and Women’s Hospital. Dr. Shah performs spine and joint injections as well as advanced interventions such as spinal cord stimulators and intrathecal pain pumps for chronic pain.
Selected Publications
Viswanathan A, Vedantam A, Hess KR, Ochoa J, Dougherty PM, Reddy AS, Koyyalagunta L, Reddy S, Bruera E. Minimally invasive cordotomy for refractory cancer pain: a randomized controlled trial. The Oncologist. In press.
Vedantam A, Bruera E, Hess KR, Dougherty PM, Viswanathan A. Somatotopy and Organization of Spinothalamic Tracts in the Human Cervical Spinal Cord. Neurosurgery. 2018 Jul 13.
Ghali MGZ, Srinivasan VM, Viswanathan A. Microvascular Decompression for Hemifacial Spasm. Int Ophthalmol Clin. 2018 Winter;58(1):111-21.
Vedantam A, Koyyalagunta D, Bruel BM, Dougherty PM, Viswanathan A. Limited Midline Myelotomy for Intractable Visceral Pain: Surgical Techniques and Outcomes. Neurosurgery. 2017 Nov 1.
Reddy GD, Viswanathan A. Trigeminal and glossopharyngeal neuralgia. Neurol Clin 2014;32:539-52.
Gadgil N, Viswanathan A. DREZotomy in the treatment of cancer pain: a review. Stereotact Funct Neurosurg. 2012;90:356-60.