If you get migraines, you already know they are not “just headaches.” The throbbing pain is often the least disruptive part. It’s the light sensitivity that sends you into a dark room. The nausea that won’t let you eat. The brain fog that lingers for a day after the pain is gone. The aura that distorts your vision before anything else even starts.

Most people are told migraines are a pain condition, something to manage with medication when it flares up. But that framework misses what’s actually happening. Migraines are a neurological event, driven by a nervous system that has become hypersensitive to input it should be able to handle without incident.

Understanding migraines this way changes everything about how they should be treated.

What Is Actually Happening During a Migraine

A migraine is not simply blood vessels expanding in the brain, though that theory dominated for decades. Current research points to something more complex: a wave of altered electrical activity that spreads across the brain, followed by a cascade of inflammatory and vascular changes that produce the pain, sensory sensitivity, and other symptoms.

This means a migraine starts in the nervous system itself, not in the blood vessels. The brain becomes excitable in a way that triggers this cascade, often in response to things that would not bother a nervous system functioning normally: a bright light, a strong smell, a skipped meal, a stressful week, a change in weather.

For people who experience frequent or chronic migraines, this points to an underlying issue. The nervous system is not correctly filtering and regulating sensory input. It is primed to overreact.

Why Migraines Are Often Tied to the Autonomic Nervous System

Many migraine patients also deal with symptoms that seem unrelated: dizziness, nausea, temperature sensitivity, fatigue, or a racing heart around the time of an attack. These are not coincidental. They are signs that the autonomic nervous system, which controls automatic functions like heart rate, digestion, and blood flow regulation, is involved in the migraine process.

This is part of why migraines respond poorly to a one-size-fits-all approach. A migraine driven primarily by autonomic dysregulation needs a different treatment strategy than one driven by cervical spine dysfunction or visual system stress.

Vestibular Migraine: When Dizziness Is the Main Symptom

Some patients experience what is known as vestibular migraine, where dizziness, imbalance, or a sense of motion are the dominant symptoms, sometimes with little or no head pain at all. This form of migraine is frequently missed because it does not look like a “typical” migraine, and patients are often sent through cardiology or inner ear workups before anyone considers the nervous system.

Vestibular migraine highlights an important point: migraines are not defined by pain location. They are defined by nervous system dysfunction that can show up in many different ways depending on which pathways are affected.

Why the Neck Is Often Part of the Migraine Picture

The cervical spine feeds a constant stream of information to the brain about head position and movement. When the neck is restricted, injured, or not functioning properly, particularly after a car accident, fall, or old sports injury, it can disrupt those signals in ways that contribute to headache and migraine patterns. This is known as cervicogenic involvement, and it is frequently overlooked in migraine care because it does not show up on standard imaging.

Common Migraine Triggers, and Why They Are Really About Threshold

Patients are often handed a list of trigger foods, told to avoid caffeine, wine, or chocolate, and sent on their way. But triggers are not the root problem. They are what happens when a nervous system’s threshold for tolerating stress, sensory input, or metabolic changes has already been lowered.

This is why the same food or the same stressful day does not trigger a migraine every time. It depends on where the nervous system’s threshold sits at that moment, influenced by sleep, hormones, hydration, inflammation, and how much the system has already been taxed that week.

Addressing the threshold itself, not just avoiding triggers, is the more sustainable path forward.

How Functional Neurology Approaches Migraines Differently

Standard migraine care typically focuses on abortive medications for individual attacks and preventive medications to reduce frequency. These can be valuable tools, but they are designed to interrupt or suppress the migraine process, not to address why the nervous system became this reactive in the first place.

At Nexus Neuro: brain + body in Carmel, Indiana, we take a different approach. Rather than treating migraines as a single condition, we evaluate the specific systems that may be contributing to your migraine pattern, including:

• Autonomic nervous system function, assessed through Nerve Express ANS testing, to determine whether autonomic dysregulation is playing a role in your migraines
• Vestibular and ocular motor function, assessed through video oculography, to identify whether eye movement or balance system dysfunction is contributing to vestibular migraine symptoms
• Cervical spine function, to determine whether neck-related input is feeding into your headache pattern
• Brain-body communication, to build a detailed picture of how different regions of your nervous system are functioning and communicating

You Do Not Have to Just Manage Migraines

If you have spent years cycling through medications that only blunt the pain without changing the frequency of your attacks, it may be time to ask a different question: not how do I treat the next migraine, but why is my nervous system generating them in the first place.

At Nexus Neuro: brain + body, we work with patients throughout Carmel, Westfield, Fishers, Zionsville, and Noblesville to identify the root cause of chronic migraines and build a personalized care plan based on objective neurological testing, not guesswork.

Ready to find out what’s really driving your migraines? Call 317-884-8824 or visit nexusneurohealth.com to schedule your evaluation.