Diseases & Conditions We Treat

At South Texas Stroke and Neuroendovascular Institute Treatment Center, we offer a full spectrum of neuroscience services, with special focus on neurovascular and neurosurgery.

South Texas Stroke and Neuroendovascular Institute Treatment Center is committed to provide individualized neurological care to its patients. Through the use of the latest innovative techniques under the expertise of Dr. Nalluri, we offer a full spectrum of neuroscience services, including neurosurgery, thrombectomy, interventional neuroendovascular, and neurology services.

Patients referred to South Texas Stroke and Neuroendovascular Institute Treatment Center will have access to a vast resource of knowledge and experience, as well as technologically advanced equipment, to ensure the best results to a comprehensive list of neurologic conditions — diagnosis to treatment. These conditions include:

  • Amyotrophic lateral sclerosis (ALS, or Lou Gehrig's disease)
  • Aneurysms
  • Attention deficit hyperactivity disorder
  • Autism
  • Back pain
  • Bell's palsy
  • Cephalic disorders
  • Cerebral palsy
  • Charcot-Marie-Tooth disease
  • Dementia
  • Encephalitis
  • Epilepsy
  • Fibromyalgia
  • Guillain-Barre syndrome
  • Headaches
  • Huntington's disease
  • Hydrocephalus
  • Lyme disease
  • Meningitis
  • Migraines
  • Movement disorders
  • Multiple sclerosis
  • Multisystem atrophy
  • Muscular dystrophy
  • Myasthenia gravis
  • Myopathies
  • Neurofibromatosis
  • Neuropathies
  • Parkinson's disease
  • Reflex sympathetic dystrophy (RSD)
  • Seizure disorders
  • Sleep disorders
  • Stroke or brain attack
  • Tumors of the nervous system
  • Vertigo


Diagram of a Brain AneurysmA brain aneurysm is a large bulge of a blood vessel in the brain. It is very discernable due to its bulbous appearance. In many cases a small aneurysm is harmless but a large aneurysm can leak or rupture, causing bleeding into the brain (hemorrhagic stroke). Embolization of the large aneurysm can eliminate the risk of catastrophic rupture. Signs include:

  • Sudden, extremely severe headache
  • Nausea and vomiting
  • Stiff neck
  • Blurred or double vision
  • Sensitivity to light
  • Seizure
  • A drooping eyelid
  • Loss of consciousness
  • Confusion

Buerger’s Disease

This rare disease most often happens in the small and medium arteries and veins in your arms and legs. They swell up and may form clots, cutting off blood supply to your fingers, hands, toes, or feet. These body parts will hurt, even when you're resting. If it's severe, you might lose fingers or toes.


Your lymphatic system is operated by the valves in the vessels as well as muscle contractions, in order to keep the lymph moving. When vessels or nodes are missing or don't work right, fluid can build up and cause swelling. This occurs most often in your arms or legs.

Raynaud’s Syndrome Or Raynaud’s Disease

Symptoms of this disorder include twitching or the feeling of coldness in one’s fingers or toes — or even cramping. This reaction can temporarily shut down blood supply to the area, making your skin look white or bluish and feel cold or numb.

Vascular disease causes can include:

  • Atherosclerosis, the buildup of plaque in your arteries
  • Blockage in your blood vessel by a mass of debris (embolus) or blood clot (thrombus)
  • Inflammation, called vasculitis
  • Trauma or injury

High-risk genetic and lifestyle factors for Raynaud’s Syndrome include, those who suffer from:

  • Diabetes
  • Family history of vascular disease, heart attack, or stroke
  • Men are at higher risk than women.
  • High blood pressure
  • High levels of fats like cholesterol and triglycerides
  • Lack of physical activity
  • Being overweight or obese
  • Smoking
  • Stress


The narrowing of the arteries caused by a persistent contraction of the blood vessels, which is known as vasoconstriction. This narrowing can reduce blood flow and can affect any area of the body including the brain (cerebral vasospasm) and the coronary artery (coronary artery vasospasm).


Interventional neurology is a subspecialty field of medicine that combines highly specialized skills from the disciplines of Neurology, Neurosurgery, and Neuroradiology to offer minimally invasive therapies for disorders of the brain and spine. Modern stroke care requires that physicians with special expertise make rapid determinations of a patient's status and of the optimal management. Treatment options vary from routine admission for observation and work-up to immediate intracranial thrombolysis.

Intracranial Thrombectomy

A thrombectomy is an innovative surgical procedure used to remove blood clots from arteries and veins. During a stroke event, blood clots can disrupt the normal flow of blood within the brain, causing life-threatening acute stroke.

During an intracranial thrombectomy procedure, the surgeon will carefully insert a catheter into the patient’s blood vessel in the brain to remove the blockage and restore blood flow to the affected area of the brain. This procedure can singularly make a huge difference because as many as two million brain cells can die for every minute the brain is deprived of blood flow during a stroke.

Angioplasty And Stenting

Diagram of a stent with balloon angioplastyAngiography examination by X-ray of blood or lymph vessels, which is carried out after introduction of a radiopaque substance.

These separate procedures restore blood flow through the artery. This procedure involves a thin tube — a tiny balloon on the end — through a blood vessel to the involved site in the artery.

A stent is a tiny tube inserted into a blocked passageway to restores the flow of blood and keep the passageway open.

Idiopathic intracranial hypertension (IIH) is a disorder related to high pressure in the brain. It causes signs and symptoms of a brain tumor. It is also sometimes called pseudotumor cerebri or benign intracranial hypertension. The fluid that surrounds the spinal cord and brain is called cerebrospinal fluid or CSF.

Why Choose South Texas Stroke And Neuroendovascular Institute?

Our brain, spine and nerves control our behavior and cognition. Any kind of damage to these three core components of the nervous system can significantly impact our mental and physical health.

Neurological disorders are probably the most complex and difficult-to-treat medical conditions. The diagnosis and management of neurological disorders requires extensive experience and use of advanced diagnostic and surgical techniques.

Being a neuroscience services provider, The South Texas Stroke and Neuroendovascular Institute Treatment Center employs a team of experienced, highly-trained staff with expertise in the diagnosis and management of patients with most complex neurological problems.

  • Neurological Diagnostics – In addition to the use of advanced imaging techniques, such as CT scan and MRI scan, for the diagnosis of nervous system disorders, we also have innovative interventions such as mechanical thrombectomy and embolization of brain and aneurysms arteriovenous brain, face and spinal cord malformations.
  • Neurology – Our expert neurologists diagnose and treat all medical issues related to the nervous system, such as memory loss, seizures and headaches.
  • Neurosurgery – We specialize in the surgery of brain and spine. Our neurosurgeons use minimally-invasive techniques to help patients recover quickly and regain their mental and physical health.
  • Rehabilitation Services – Patients who have undergone a neurosurgery or neurotrauma such as a stroke and may require rehabilitation services to relearn the basic tasks, such as talking, walking, and eating. Our healthcare team provides rehabilitative care and support to help patients reclaim their independent, healthy lives.

More About Dr. Narulli

  • Fellowships: Endovascular Surgical Neuroradiology - Texas Stroke
  • Institute, Plano, Texas; Neurocritical Care - Washington University
  • School of Medicine, St. Louis, Missouri
  • Residency: Neurology and Chief Residency - Southern Illinois
  • University School of Medicine, Springfield, Illinois
  • Masters of Public Health: Georgia Southern University, Statesboro
  • Doctorate of Medicine: Guntur Medical College, Guntur, Andhra Pradesh