Why Your Migraines Aren't Going Away — And What Changes Them
By Dr. Brenna Erickson, DC ┃The Migraine Whisperer
📖 Reading Time: 17 minutes
a woman with dark hair sits in a mid century modern room, dark green walls, an orange, white and gray herringbone chair beneather her, some visible foliage behind. Both her hands are covering her face, her long dark hair light red from the light spilling over her shoulders
Maybe you've learned to sleep with an ice pack within reach. Maybe you know exactly which corner of which room has the least light when it gets bad, and you've gotten frighteningly good at excusing yourself from things (dinners, meetings, your kid's recital) without having to explain why. Maybe you carry your medication in every bag you own, and you've developed a private calculus for when to take it, when to wait, when you've already waited too long. Maybe you've stopped telling people how often it happens because you're tired of the look, the one that's half sympathy and half something you can't quite name.
And maybe, somewhere underneath the management and the adaptation, you've quietly concluded that this is just how your life is going to be.
If any of that landed: this is for you.
You are not stuck. You are under-informed. And there is a significant difference.
I want to tell you what migraines really are, why the way we talk about them in conventional medicine leaves most people worse off than they need to be, and what it takes to build a nervous system that generates fewer, shorter, and less severe attacks. Not because you found the right medication. Because you changed the conditions your nervous system is living in.
That's what this is about.
What Migraines Are
Let's start with biology, because it matters, and because most people have never had it explained clearly.
Migraine is not a headache. It's a neurological event, a whole-brain, whole-body phenomenon that happens to sometimes involve head pain. It originates not in your head but in your hypothalamus.
The hypothalamus is your body's master regulator. It governs sleep-wake cycles, hunger and thirst, body temperature, hormonal signaling, stress response, and pain sensitivity. The part of your brain whose entire job is to keep your internal environment stable in the face of a constantly changing world.
In migraine-prone brains, the hypothalamus is hyperreactive. It responds to threat, whether that threat is a missed meal, a disrupted sleep cycle, a hormonal fluctuation, a weather change, or a week of accumulated stress, by triggering a cascade. The trigeminal nerve activates, inflammation spreads through the blood vessels around the brain, and the result is the light sensitivity, nausea, cognitive shutdown, and pain that migraine sufferers know intimately. In some people, this cascade starts with aura, the visual disturbances or sensory changes that arrive before the pain, which is the brain's electrical activity spreading in a wave before the headache begins.
Here is the part that changes everything: this hyperreactivity is indeed genetic. The threshold for triggering that cascade is lower in some brains than others, and that lower threshold has a hereditary component. But the threshold is not fixed. It is dynamic. It moves up and down based on the conditions your nervous system is living in at any given moment.
That is the entire premise of what I do.
The Problem With "It's Genetic"
When a neurologist tells you your migraines are genetic, they are telling you the truth. What they often fail to tell you, because the Western medical model isn't built around this question, is what that means for your life beyond prescription management.
The genetic framing, delivered without context, creates learned helplessness. You receive a diagnosis that names something immutable about you, your DNA, your neurology, your inheritance, and the implicit message is that treatment means symptom control, not root cause modification. You learn to abort attacks. You learn to identify triggers. You learn to have a plan for the bad days.
What you are rarely taught is how to change the biological terrain that makes your nervous system so reactive in the first place.
This isn't a failure of your neurologist's intelligence, or their care for their patients. It's a structural gap in how Western medicine approaches chronic, complex, multisystem conditions. Medication for acute attacks has its place, and I'm not asking you to throw out your triptans. Used early in the attack window, before the cascade is fully established, they can be effective. But aborting attacks is not the same as reducing how often your nervous system generates them. Management is one goal. Changing the terrain is another.
That is where my functional medicine lens comes in. And it's where the real work happens.
No Two Migraine Brains Are the Same
Here's something I hear constantly from new patients, in some version or another: "I've tried everything, and nothing works. I don't know if I'm just a difficult case, or if I'm doing something wrong, or if there's something wrong with me."
There is nothing wrong with you. You've probably been treated with approaches designed for a generic migraine patient, and you are not a generic migraine patient. Nobody is.
Migraine exists on a spectrum that is wider than most people realize, and the lived experience varies just as dramatically as the clinical presentation. There's episodic migraine, a handful of attacks per month, relatively predictable, often responsive to acute medication. There's chronic migraine, 15 or more headache days per month, where the boundary between attack and baseline starts to erode, where you stop remembering what it felt like to not be managing something. There's migraine with aura, where the attack announces itself with visual disturbances, sensory changes, or language disruption before the pain arrives, sometimes frightening, often misunderstood. There's vestibular migraine, where the primary experience is vertigo and balance disruption rather than head pain, and patients have frequently been through ENT workups and told nothing is wrong. There's the migraine that shows up as brain fog and cognitive shutdown without a headache at all, which is almost never recognized for what it is. And there's the migraine that dismantles someone for three days while their employer, their partner, their children watch and quietly wonder why they can't just push through.
All of it is real. None of it is an exaggeration. And the person who's been told they "don't look that sick" has heard something that is both unkind and clinically uninformed.
What this means for how I work: there is no universal migraine protocol. There is careful assessment, pattern recognition, and an individualized plan built around your specific nervous system, your specific contributors, your specific life. What I can give you here is the map, the terrain every migraine brain is navigating, and the places I look when I'm trying to understand what's driving yours.
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The Framework: Threshold Theory
To understand why migraine responds to the approach I'm describing, you need one concept, and once you have it, everything else makes sense.
Every migraine-prone nervous system has a threshold: the level of accumulated physiological stress at which the hypothalamus tips into an attack. That threshold is genetically influenced, some brains are set lower than others. But it is not fixed. It rises and falls continuously based on what your nervous system is carrying.
Think of your migraine threshold as a container. When your allostatic load is low, when sleep is good, blood sugar is stable, hormones are balanced, gut is functioning, stress is manageable, that container has room. Your nervous system can absorb disruption without cascading. When your load is high, the container is nearly full, and the smallest additional stressor tips it over.
This is why your triggers are inconsistent and maddening. Wine triggered a migraine last month but not this month. Your period brought an attack in January but not February. Those things didn't change. Your threshold was different. The container was sitting at a different level.
This is also why chasing and eliminating individual triggers is an incomplete strategy. You can live on a trigger-free island and still have daily migraines if your underlying load is high enough. The more powerful move, the one that actually changes the trajectory, is to systematically lower your allostatic load so your threshold rises and your nervous system has more room before it tips.
That means looking at everything that contributes to load. For most patients, several of the following are active simultaneously, each adding a little more to the container.
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What's Actually Filling Your Container
Sleep is the foundation everything else is built on, and for a lot of my patients, it's also the thing that feels most out of reach. The hypothalamus, the same structure initiating your migraine cascade, also governs your circadian rhythm. Sleep deprivation directly lowers migraine threshold. It disrupts the glymphatic system, your brain's overnight cleaning crew, clearing inflammatory waste while you rest. It elevates cortisol, destabilizes blood sugar overnight, and quietly degrades every other system on this list. Morning migraines often do have a sleep component — blood sugar drops overnight and cortisol patterns shift in the early hours, both of which can initiate a cascade before you've opened your eyes.
Weekend migraines and let-down attacks, the ones that arrive the moment you finally exhale after a hard stretch, are a different story. During sustained stress, cortisol stays elevated — and cortisol is transiently anti-inflammatory, which artificially props your threshold higher than it would otherwise be. When the stressor resolves and cortisol drops, the threshold falls with it, and the attack that couldn't get through during the week finally can. This is why people get migraines on the first day of vacation, the morning after a major deadline, the Saturday after a brutal work week. The sleep change that often accompanies weekends is downstream of this cortisol shift, not the primary driver. Telling someone to keep a consistent sleep schedule on weekends addresses a symptom of the problem. The real target is the magnitude of the cortisol fluctuation across the week — which points back to chronic stress load and overall allostatic burden.
What I'm looking for in sleep isn't just whether you're getting enough hours. It's the quality, the timing, and what's upstream of why it's broken, because fixing the surface without addressing what's driving it is just another thing that works for a while and then stops.
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Hormone balance shapes everything quietly, and it's one of the places where the story is often happening long before anyone thinks to look. If you menstruate and have migraines, you already know your cycle and your attacks are in conversation. Menstrual migraines are one of the clearest demonstrations of how hormonal fluctuation directly interacts with threshold. But this runs deeper than cycle-related attacks. Estrogen has significant anti-inflammatory and neuroprotective effects. Progesterone has a calming effect on the nervous system, it literally helps your brain settle, and it supports both sleep quality and emotional regulation. What often gets missed: chronic stress and burnout actively deplete progesterone. When your body is running on cortisol for months or years, as so many of my patients have been long before they ever found my door, progesterone takes the hit. The nervous system loses one of its most important buffers. Add chemical estrogen exposure from plastics and personal care products, a poorly supported second half of the cycle, or the wild hormonal fluctuations of perimenopause, and you have a hormonal environment that a sensitized hypothalamus will feel immediately.
Blood sugar regulation doesn't get enough credit as a migraine driver, and it's one of the most fixable pieces once you understand the mechanism. The brain runs on glucose. When blood sugar dips — even mildly — the brain perceives metabolic threat. For a migraine-prone brain, that signal can be enough to initiate a cascade. This is why skipping meals is such a reliable trigger, why attacks cluster in the late afternoon, why the "hunger headache" is a recognized phenomenon. It's also why eating well is so much harder when you're managing a chronic condition — migraines disrupt appetite and meal timing, which destabilizes blood sugar, which lowers threshold, which generates more migraines. Ensuring that blood sugar stays stable throughout the day is a simple way to raise your migraine threshold.
Gut dysbiosis and food sensitivities matter because the gut and brain are in constant two-way communication, and for many of my patients, the gut is quietly running hot in the background long before anyone connects it to their migraines. When the gut microbiome is out of balance, through bacterial overgrowth, intestinal permeability, or other disruption, the result is systemic inflammation the brain feels directly. Food sensitivities operate on a similar pathway. Worth being specific: this is not the elimination diet you've already tried, the one that was exhausting to maintain and helped until it didn't. Food sensitivities are delayed inflammatory responses, occurring 24 to 72 hours after exposure, which makes them nearly impossible to identify from a food diary alone. Common culprits in migraine include gluten, dairy, eggs, artificial sweeteners, and MSG, but the list is individual, and identifying yours requires more than willpower and a spreadsheet. This is a process that I work with my patients 1-1 on.
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Histamine intolerance gets missed constantly, and I bring it up often with patients who feel like their food reactions make no sense. Histamine is found in aged, fermented, and leftover foods, wine, aged cheeses, cured meats, vinegar, kombucha, smoked fish, and it's also produced internally as part of the immune response. In a healthy gut, an enzyme called DAO breaks down dietary histamine before it can accumulate. In a dysbiotic gut, DAO production is impaired. What's left is histamine that doesn't clear efficiently, and histamine causes blood vessels to dilate and directly irritates the trigeminal nerve system at the center of the migraine cascade. The part that makes this so hard to catch: the trigger isn't one food. It's accumulation. A glass of wine plus leftover chicken plus a stressful week plus the wrong day in your cycle, any one of those alone might be fine. Together, they tip the bucket. No food diary will show you that pattern. That's why this piece so often goes unidentified until someone is looking for it specifically.
Toxic burden is a topic I approach carefully, because it's easy for this conversation to feel overwhelming or even shaming, and that's the opposite of what I'm going for. The grounded version: your liver, kidneys, and lymphatic system are continuously processing the environmental compounds you're exposed to every day. Those systems have a capacity. When ongoing input consistently exceeds that capacity, burden accumulates, and a body carrying a high toxic load is running a more inflamed, more reactive, lower-threshold nervous system. The most important first step isn't a cleanse or a detox protocol. It's reducing what's coming in, because you can't ask your detox systems to clear a backlog while you keep adding to it faster than they can process. Synthetic fragrance in personal care and household products is one of the most significant and underappreciated daily sources. Plastics and food storage, conventional produce, mold in the home environment, and endocrine-disrupting compounds that also directly affect the hormonal axis are all worth a thoughtful look. This doesn't have to be all-or-nothing. Small, consistent reductions in ongoing exposure give your body's own systems the room they need to do what they're already designed to do. When it makes sense, we support clearance pathways from there.
Mitochondrial function is the energy story nobody tells migraine patients, and it's the one that often explains the exhaustion that goes so far beyond what the migraines themselves should account for. Research consistently shows that the migraine nervous system has impaired energy production at the cellular level, not just during attacks but between them. If you've ever described your fatigue as bone-tired, the kind that doesn't resolve with rest and feels different from ordinary tiredness, this is part of what you're describing. The electrical wave that underlies migraine aura, and the demands of a full attack, place enormous strain on a brain already running on a thinner energy margin than it should be. This is part of why magnesium, CoQ10, and riboflavin (B2) have the evidence base they do in migraine prevention. All three are directly involved in how cells produce energy, and deficiencies in all three are common in migraine patients. But it's bigger than supplements. Cellular energy is downstream of everything else on this list. Inflammation, blood sugar instability, poor sleep, toxic burden all impair it. Addressing it is part of what happens when we address the whole picture, and for some patients it becomes a named priority in its own right.
Thyroid function gets consistently underestimated, and so many of my patients have been told their thyroid is "fine" when the full picture tells a different story. The standard TSH test tells you whether your thyroid is in crisis. It doesn't tell you whether it's functioning well, and for migraine patients, functioning well matters. Thyroid hormones regulate energy production throughout the body, including in the brain. A thyroid that's technically within normal range but not where it needs to be can lower migraine threshold, worsen cellular energy, disrupt sleep quality, amplify anxiety and mood shifts, and contribute to that persistent fatigue that no amount of rest seems to touch. It's also disproportionately common in women, frequently missed by standard screening, and almost never investigated in the context of migraine care. When I run thyroid panels, I'm looking at the full picture: TSH, free T3, free T4, reverse T3, and thyroid antibodies, because the story is often in the details that a single number doesn't capture. If you've been told your thyroid is normal and you still feel like something is off, that instinct is worth honoring.
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How I Work With Migraine
At Migraine Whisperer, I don't think about migraine as a deficiency to be corrected or a genetic sentence to be managed. By the time most people find me, they've been carrying this for years, the missed plans, the careful logistics, the quiet grief of a life lived around a condition nobody fully sees. What I think about is what it would take for that to change. A nervous system working exactly as designed, in a body carrying more load than it has the resources to absorb. The goal is to change that ratio.
My work is online and educational, and for those in Minneapolis, also in person. Here's what that looks like across all the ways we can connect.
On Instagram at @themigrainewhisperer, I teach the framework regularly, threshold theory, the container, the systems that fill it, the mechanisms that matter. It's the place to start if you want to understand this work in small, digestible doses before committing to anything. Each post is built to give you something real, not just awareness.
The “Oh Sheet” Migraine Emergency Kit is a free resource built for the moment between "I feel a little off" and "I'm in full migraine." Five evidence-informed practices for that window, grounded in threshold theory, nervous system regulation, cellular hydration, and blood sugar stability. Not a protocol. An emergency response for right now, while you do the deeper work. Always free.
→ Download the Oh Sheet Migraine Emergency Kit
The Migraine Resilience Academy is where the deeper work happens. A six-week online program built specifically for people with chronic illness, which means it's designed around the reality that you will have bad weeks. Everything is online. Every call is recorded, so if you go down mid-program, you don't lose the content. Every resource is yours to keep permanently. And you do this inside a small cohort of people who understand what your life actually looks like.
The program moves through the framework in this post, nervous system regulation first, then sleep, hormones, blood sugar, gut, mitochondrial function, in the order that makes the most sense for your specific picture. One lever at a time, at a pace your nervous system can absorb. For people who want to go deeper, there's an optional four-week continuation.
This is the bridge between your diagnosis and a lifestyle you can actually execute. A supported container for learning what your nervous system needs and building the conditions for it to get there.
→ Learn more about the Migraine Resilience Academy
Free clarity call — if you're not sure where to start, or you want to talk through your specific picture before committing to anything, I offer free 20-minute clarity calls. No pitch, no pressure. Just a real conversation about what's driving your pattern and whether working together makes sense.
In person in Minneapolis — I practice at Stockheart Whole Health, an integrative clinic where I offer chiropractic care, DNFT, cranial adjusting, and functional medicine alongside colleagues who provide acupuncture and massage. If you're local and want hands-on care alongside the framework, that's where to find me.
A Note From Me
Dr brenna in a black and white portrait smiling at the camera, she wear a ribbed tank top with long necklace, her short curly hair.
I became the Migraine Whisperer because migraine kept showing up in my practice as the condition that the conventional system was most consistently failing, not for lack of trying, but because the tools available within that system weren't built for what migraine is. A whole-body, whole-nervous-system, whole-life condition that requires a whole-person approach.
The people I work with have usually already tried a lot. They've done the elimination diets, the medication trials, the trigger journals. They've been told their migraines are stress-related, or hormonal, or just genetic bad luck. What they haven't had is someone sit with them and map the whole picture, all of the contributors, the interactions between them, the specific levers that matter most for their particular body, and build a plan from there.
What I get to witness, when someone finally has that, is a shift that goes beyond migraine days. They stop bracing. They start trusting their body again, not completely, not all at once, but enough to make plans, to show up, to stop living so far inside the contingency. That's what I'm here for. And I find it endlessly worthwhile.
— Dr. Brenna Erickson, DC, The Migraine Whisperer
The Migraine Whisperer is Dr. Brenna Erickson's education platform focused on helping people with chronic and complex migraine build the conditions for real, lasting neurological resilience. She practices at Stockheart Whole Health in Minneapolis and works with clients online through the Migraine Resilience Academy.
RESOURCES
👉 START HERE: Download the free "Oh Sheet" Migraine Toolkit
👉 GO DEEPER: Learn about The Migraine Resilience Academy
👉 FOLLOW ALONG: @migrainewhisperer on Instagram
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