A neurologist is a medical doctor who specializes in diagnosing and treating disorders of the brain, spinal cord, and nerves. Unlike neurosurgeons, neurologists don’t perform surgery. They focus on identifying what’s going wrong in the nervous system and managing it through medication, therapy, and long-term care.
What a Neurologist Treats
The nervous system controls everything from movement and speech to memory and sleep, so the range of conditions neurologists handle is broad. Some of the most common include migraines and chronic headaches, epilepsy and seizures, stroke, multiple sclerosis (MS), Parkinson’s disease, and Alzheimer’s disease. They also manage conditions like ALS, peripheral neuropathy (nerve damage in the hands and feet), tremors, narcolepsy, and traumatic brain injuries.
Some of these conditions are chronic and require years of ongoing management. A person with MS or Parkinson’s, for example, will typically see a neurologist regularly to adjust treatment as the disease progresses. Other cases are more acute: someone who has a stroke or a sudden seizure may be referred to a neurologist for evaluation and follow-up after the initial emergency.
What Happens During a Neurological Exam
A neurologist’s first tool is a physical exam designed to test how well your nervous system is functioning. It looks simple, but each step targets a specific pathway between the brain and body. The exam typically covers mental status and speech, cranial nerve function (the nerves that control your face, eyes, and hearing), muscle strength, coordination, reflexes, and sensation in different parts of the body.
You might be asked to walk a straight line, follow a light with your eyes, write your name, walk on your heels or toes, or squeeze the doctor’s fingers. Reflex testing, like the classic knee tap with a rubber hammer, checks how well nerves are communicating between your brain and limbs. Your neurologist may also lightly stroke the sole of your foot or the skin on your abdomen to check for specific reflexes. The whole exam is painless and can reveal a surprising amount about where a problem is located in the nervous system.
Diagnostic Tests Neurologists Use
When the physical exam points to a problem but doesn’t give the full picture, neurologists order specialized tests. The most common include:
- EEG (electroencephalography): Monitors the brain’s electrical activity through sensors on the scalp. It’s painless and primarily used to diagnose seizure disorders, evaluate sleep problems, and monitor brain activity in patients who have lost consciousness.
- EMG (electromyography): Records electrical activity in the muscles using very fine needles or wires inserted into the muscle. It helps diagnose nerve and muscle disorders, spinal nerve compression, and motor neuron diseases like ALS.
- Nerve conduction study: Usually done alongside an EMG. Small electrical pulses (similar to a static shock) are applied to the skin to measure how fast and how strongly a nerve can send a signal. This helps identify nerve damage.
- Lumbar puncture (spinal tap): A small amount of fluid is removed from around the spinal cord and tested for signs of bleeding, infection, MS, or metabolic conditions. You’ll typically be asked to lie flat for one to two hours afterward to reduce the chance of a headache from temporarily low spinal fluid levels.
Neurologists also rely heavily on imaging like MRI and CT scans, though those are performed by radiology departments. The neurologist interprets the results in the context of your symptoms and exam findings.
How Neurologists Differ From Neurosurgeons
The distinction is straightforward: both treat the same organ system, but neurosurgeons operate and neurologists don’t. When you have neurological symptoms, the neurologist is usually the first specialist you see. They’ll evaluate you, order imaging, and identify the problem. If they discover something structural, like a brain tumor, they’ll refer you to a neurosurgeon.
In practice, the two often work as a team. After a neurosurgeon removes a brain tumor, for instance, the neurology team may coordinate chemotherapy and manage long-term care. The lines have blurred slightly in recent years: some specially trained neurologists now perform minimally invasive procedures for stroke and brain aneurysms using catheters threaded through blood vessels, a technique also used by neurosurgeons and radiologists.
Training and Certification
Becoming a neurologist requires at least 12 years of education and training after high school. The path includes four years of college, four years of medical school, a one-year internship in internal medicine, and at least three years of specialized residency training in neurology. Some programs combine the internship and residency into a four-year “categorical” track. Child neurologists complete two years of pediatrics instead of the one-year internal medicine internship.
After residency, neurologists must pass a board certification exam through the American Board of Psychiatry and Neurology. This requires holding a valid, unrestricted medical license and completing all required training in an accredited program. Many neurologists then pursue additional fellowship training in a specific area.
Neurology Subspecialties
Neurology is broad enough that many neurologists focus on a narrower area after their general training. Common subspecialties include epilepsy, movement disorders (like Parkinson’s and tremors), stroke and vascular neurology, sleep medicine, neuromuscular medicine, neuro-oncology (brain and spinal tumors), headache medicine, and behavioral neurology, which focuses on conditions affecting memory and cognition like dementia.
If you’re referred to a neurologist for a specific condition, your primary care doctor may send you directly to a subspecialist. For less clear-cut symptoms, a general neurologist can evaluate you first and refer you further if needed.
Reasons You Might Be Referred
Most people see a neurologist through a referral from their primary care doctor. Common reasons include persistent or worsening headaches, unexplained numbness or tingling, seizures, memory problems, chronic dizziness, difficulty with balance or coordination, and muscle weakness that doesn’t have an obvious cause.
Some symptoms warrant urgent evaluation. A rapidly progressive unsteady walk that develops over days to weeks, for example, can signal a serious underlying condition and should be assessed quickly. Difficulty initiating or coordinating walking, sometimes called gait apraxia, may need neurological evaluation to rule out a buildup of fluid in the brain. Sudden symptoms like facial drooping, slurred speech, or one-sided weakness are signs of stroke and require emergency care before a neurologist gets involved.