What causes migraine? For a long time, people wanted one clean answer.
Was it blood vessels? Brain chemistry? Genetics? Hormones? Triggers? Stress? Food? Weather? Something in the nervous system?
The frustrating answer is that migraine is not usually caused by one simple thing.
The more useful answer is this: migraine is a complex neurological condition shaped by the brain, nervous system, genetics, biology, triggers, and the body’s broader health patterns.
At this year’s Migraine World Summit, Dr. Vince Martin explained that the science of migraine has evolved significantly. Migraine was once understood mainly as a vascular condition. Then it became understood as a neuronal disease. Then, as research advanced, it became clearer that migraine can involve both the nervous system and the vascular system. Now, researchers are exploring an even broader view: migraine as a systemic disease that can involve the whole body.
That shift matters.
Because if migraine is not just “a headache,” then support cannot be built around pain alone.
It has to account for the whole system.
For a broader foundation on migraine as more than head pain, read Migraine Symptoms Explained: The Hidden Full-Body Effects Most People Miss.
Why “What Causes Migraine?” Is Not a Simple Question
When people ask what causes migraine, they are often asking a very human question:
Why is this happening to me?
That question deserves more than a list of common triggers.
Triggers may help explain why a specific attack happens on a specific day. But they do not always explain why someone has migraine disease in the first place.
Dr. Martin made this distinction clearly in his Migraine World Summit interview. A cause is something that contributes to why a person develops migraine overall. A trigger is something that may set off a particular attack.
For example, a drop in estrogen around a menstrual cycle may trigger a migraine attack. A weather shift may trigger an attack. Stress may trigger an attack. But those are not the same as the deeper biological reasons a person has migraine.
That distinction is important because many people blame themselves for every migraine attack.
They wonder if they ate the wrong thing, slept the wrong way, worked too hard, missed a signal, or failed to avoid the right trigger.
But migraine is more complex than that.
The American Migraine Foundation also explains that migraine can involve many factors, including genetics, hormones, food choices, and other medical conditions. You can read their overview of what causes migraine here.
What Causes Migraine According to Current Science?
Current science suggests that migraine can develop through several overlapping pathways.
Those pathways may include:
- genetics
- changes in brain and nerve signaling
- activation of the trigeminal nerve system
- release of migraine-related proteins such as CGRP
- vascular involvement
- hormonal shifts
- inflammatory or immune-system activity
- other medical conditions
- environmental factors
- individual trigger patterns
In simple terms, migraine may be one way the brain and body respond when certain biological systems become activated or overloaded.
That does not mean every attack is preventable.
It does mean migraine is not random in the way it often feels.
There may be patterns underneath it. Those patterns may involve the nervous system, hormones, sleep, sensory input, inflammation, pain conditions, mood, weather, or other factors.
This is why migraine tracking can be useful. Not because it gives you perfect control, but because it helps you notice what tends to repeat.
For a practical framework, read Migraine Tracking: How to Find Patterns Without Overwhelm.
How the Science of Migraine Has Changed
Historically, migraine was often understood as a vascular disease.
In that older model, aura was thought to come from blood vessel constriction. The headache phase was then thought to come from blood vessel dilation or vascular changes.
Later, science moved toward a neuronal model. Researchers found that rare forms of migraine, such as familial hemiplegic migraine, were linked with mutations affecting nerve-cell channels.
Then migraine became understood as a neurovascular disease, involving both nerve signaling and blood vessels.
Today, the picture is even broader.
Dr. Martin explained that migraine still involves the brain and nervous system, but newer research suggests that other body systems may also influence migraine. This includes vascular health, immune activity, hormones, gastrointestinal health, sleep, pain disorders, and other medical conditions.
This evolving science helps explain why migraine can feel so different from one person to another.
One person may have migraine strongly shaped by hormones.
Another may have attacks connected to sleep apnea, neck pain, TMJ, depression, weather, or sensory overload.
Another may have a strong family history and genetic vulnerability.
In other words, there may be many roads into migraine.
What Happens in the Brain During Migraine?
One important part of migraine biology involves the trigeminal nerve.
Dr. Martin described the trigeminal nerve as the main sensory nerve of the head. During a migraine attack, this nerve can become activated. When it does, it can release a protein called CGRP, or calcitonin gene-related peptide.
CGRP can then bind to nerve cells and blood vessels as part of a larger cascade of migraine activity.
This matters because many newer migraine therapies are designed to block CGRP or its receptor.
That does not mean CGRP explains every part of migraine. But it is one of the clearest examples of how migraine involves nerve signaling, vascular activity, and inflammatory-like pathways at the same time.
The National Institute of Neurological Disorders and Stroke describes migraine as a genetic disorder and notes that many people with migraine have a family history of the condition. You can read the NINDS migraine overview here.
So when we ask what causes migraine, we are not looking at one switch.
We are looking at a network.
Is Migraine Genetic?
Genetics matter in migraine.
But genetics are not the whole story.
Dr. Martin explained that genetics may explain about half of whether a person develops migraine. That means the other half may involve environment, life events, other illnesses, or biological factors that interact with genetic risk.
This helps explain why migraine often runs in families, but not always in a predictable way.
One person may have a parent with migraine and develop similar symptoms.
Another may have a strong genetic tendency but only begin having attacks after a major hormonal shift, head injury, illness, sleep disruption, or other change.
Mayo Clinic also notes that both genetics and environmental factors appear to play a role in migraine. You can read Mayo Clinic’s migraine symptoms and causes overview here.
This is one reason migraine can feel so confusing.
It can be inherited, but still shaped by daily life.
It can be neurological, but still influenced by hormones, sleep, stress, weather, and other body systems.
It can have patterns, but still feel unpredictable.
Migraine Causes vs. Migraine Triggers
This is one of the most important distinctions in migraine education.
A migraine cause helps explain why someone has migraine disease.
A migraine trigger helps explain why a specific attack may happen.
For example:
- genetic vulnerability may be part of the cause
- a menstrual hormone shift may trigger a specific attack
- brain and nerve signaling may be part of the cause
- a low-pressure weather system may trigger a specific attack
- another medical condition may increase migraine burden
- poor sleep may trigger a specific attack
The Migraine Trust notes that common triggers can include hormones, stress, lack of sleep, skipped meals, caffeine, alcohol, dehydration, and routine changes. It also emphasizes that triggers vary from person to person. You can read their migraine trigger guide here.
This is why Aevere talks so much about pattern recognition.
The goal is not to blame every attack on one thing.
The goal is to understand your own system with more clarity.
If you are trying to separate early symptoms from triggers, read Migraine Triggers vs. Early Symptoms: How to Tell the Difference.
Why Migraine May Be a Whole-Body Condition
One of the most important ideas from Dr. Martin’s presentation is that migraine may be understood as systemic.
A systemic disease affects other organ systems or involves the body more broadly.
This does not mean migraine is no longer neurological. It is still deeply connected to the brain and nervous system.
However, it does mean that migraine may interact with other systems in the body.
Dr. Martin discussed research connecting migraine with other conditions, including depression, anxiety, autoimmune disease, vascular disease, thyroid disease, gastrointestinal disorders, pain disorders, obstructive sleep apnea, and others.
That does not mean every person with migraine has these conditions.
It also does not mean every migraine attack is caused by another illness.
However, it does suggest that for some people, migraine may be influenced by whole-body health patterns.
This is why a broader view of migraine can be so helpful.
It moves the conversation beyond “What single thing caused this?” and toward “What systems may be interacting here?”
Comorbidities and Migraine: Why Other Conditions Matter
Many people with migraine also live with other health conditions.
These are often called comorbidities.
Dr. Martin discussed several conditions that appear more often in people with migraine, including:
- depression
- anxiety
- thyroid disease
- autoimmune conditions
- vascular conditions
- gastrointestinal disorders
- neck pain
- low back pain
- fibromyalgia
- TMJ or jaw-related issues
- obstructive sleep apnea
For the person living with migraine, this can be both validating and overwhelming.
Validating, because it explains why migraine may not feel isolated.
Overwhelming, because it can feel like everything is connected.
The important point is not to diagnose yourself from a list.
The important point is to notice when another condition may be increasing your migraine burden and bring that pattern to a qualified healthcare provider.
For example, if neck pain often flares before migraine, that pattern is worth discussing.
If poor sleep or possible sleep apnea seems connected to morning headaches, that deserves attention.
If mood symptoms and migraine frequency seem to rise together, that relationship matters.
Whole-body thinking does not replace migraine care.
It can make migraine care more complete.
Why Treating One Pattern May Help Another
Dr. Martin explained that clinicians may sometimes look beyond migraine-specific treatment and ask what else could be driving migraine frequency.
That could include neck pain, TMJ, sinus or allergic disease, depression, hormonal shifts, sleep apnea, or other factors.
In some cases, addressing those related patterns may help reduce migraine burden.
That does not mean one simple fix will solve migraine.
But it does mean migraine care may benefit from a wider lens.
This is an important shift.
Instead of treating migraine as a stand-alone event, we can begin to understand it as part of a larger system.
That system may include:
- sleep quality
- hormonal changes
- sensory load
- inflammation
- stress physiology
- pain patterns
- hydration and meal timing
- other diagnosed medical conditions
This is also where the Aevere Ritual System becomes useful.
Because even when you cannot control every factor, you can build more supportive routines around the patterns you can see.
How the Aevere Ritual System Fits Into Migraine Support
Understanding what causes migraine does not mean you can control every variable.
But it can help you reduce unnecessary blame.
It can help you notice patterns earlier.
And it can help you build supportive routines around the way your nervous system actually responds.
That is where the Aevere Ritual System fits in.
The Ritual System is designed around a simple idea:
When your system starts signaling overload, support should be easy to reach for.
For example, if your migraine pattern often includes light sensitivity, a ritual may include FL-41 glasses, dimmer light, hydration, and a screen break.
If your pattern often includes sensory overload, a ritual may include reducing noise, stepping away from strong smells, using a cooling eye mask, and creating a lower-stimulation environment.
If your pattern often includes postdrome fatigue or brain fog, a ritual may include hydration, gentle pacing, simplified tasks, and reduced decision-making.
This is not about claiming to treat or prevent migraine.
It is about making support easier, calmer, and more repeatable.
Because when migraine is already unfolding, the last thing you need is a complicated plan.
Why This Science Supports Migraine Tracking
If migraine can be shaped by genetics, triggers, biology, comorbidities, and environmental factors, then tracking becomes more than a diary.
It becomes a way to understand your personal pattern.
Not perfectly.
Not obsessively.
Just enough to notice what keeps repeating.
Migraine tracking can help you see whether your attacks are more likely to show up after:
- poor sleep
- weather changes
- hormonal shifts
- neck pain
- sensory overload
- missed meals
- high stress
- allergy flares
- changes in routine
- certain recovery patterns
That awareness can help you have better conversations with your clinician.
It can also help you build rituals that match your actual life.
For a simpler way to track without overwhelm, read Migraine Tracking: How to Find Patterns Without Overwhelm.
What This Means for the Future of Migraine Care
Dr. Martin described an exciting future where migraine care may become more targeted.
Instead of treating all migraine attacks as if they start the same way, future research may help identify different migraine pathways.
For one person, the dominant pathway may be hormonal.
For another, it may be weather-related.
For another, it may involve genetics, neck pain, sleep apnea, inflammation, or sensory processing.
That future matters because migraine is not one-size-fits-all.
Many people already know this from lived experience.
What works for one person may not work for another.
What triggers one person may not affect someone else.
Even your own migraine pattern may change over time.
That is why Aevere believes the future of migraine support has to be more personalized, more connected, and more realistic.
Science can help explain the condition.
Tracking can help reveal the pattern.
Rituals can help make support easier to use in real life.
When to Talk to a Healthcare Provider
If your migraine pattern is changing, it is worth discussing with a healthcare provider.
This is especially important if you notice:
- attacks becoming more frequent
- new neurological symptoms
- new weakness, numbness, or speech difficulty
- significant changes in vision
- new severe dizziness
- headaches after head injury
- morning headaches with possible sleep breathing issues
- headaches that feel different from your usual pattern
- migraine worsening alongside another condition
Migraine can explain many symptoms.
But it should not become a reason to ignore new or concerning changes.
A good rule is simple:
If it is familiar and consistent, track it. If it is new, severe, or different, ask.
The Aevere Perspective on What Causes Migraine
At Aevere, we believe the question “what causes migraine?” deserves a better answer than “avoid your triggers.”
Triggers matter.
But they are not the whole story.
Migraine is a complex condition involving the brain, nervous system, body, environment, and individual patterns over time.
That means support should be more thoughtful too.
It should not make people feel blamed for every attack.
It should not ask people to control every variable.
And it should not treat migraine as if it only exists during the pain phase.
A better approach starts with understanding.
Understanding your nervous system.
Understanding your patterns.
Understanding your sensory load.
Understanding what support feels realistic when your energy is low.
That is the world Aevere is building toward: migraine support that is calmer, smarter, and more connected to real life.
Final Thought
So, what causes migraine?
The most honest answer is that migraine can have many contributing causes.
It can involve genetics. It can involve the nervous system. It can involve vascular pathways. It can involve hormones, inflammation, sleep, other health conditions, environmental factors, and individual triggers.
That complexity can feel frustrating.
But it can also be freeing.
Because if migraine is not caused by one simple failure, then you do not need to blame yourself for not finding one simple fix.
You can start with a better question:
What patterns does my system keep showing me?
That is where understanding begins.
And for many people, that is where support can begin too.
FAQ: What Causes Migraine?
What causes migraine?
Migraine can be caused by a combination of genetics, brain and nervous system activity, vascular pathways, hormones, environmental factors, other health conditions, and individual trigger patterns. There is usually not one single cause.
Is migraine genetic?
Genetics can play a major role in migraine. Dr. Vince Martin explained that genetics may account for about half of whether a person develops migraine, while other factors may also influence risk and attack patterns.
Are migraine causes and migraine triggers the same thing?
No. A cause helps explain why someone has migraine disease overall. A trigger helps explain why a specific migraine attack may happen at a specific time. For example, genetics may contribute to migraine, while weather or hormonal shifts may trigger an attack.
What happens in the brain during migraine?
During a migraine attack, the trigeminal nerve system can become activated. This may involve the release of CGRP, a protein involved in migraine pathways. Migraine can also involve nerve signaling, sensory processing, vascular activity, and other biological systems.
Can other health conditions affect migraine?
Yes. Some people with migraine also have conditions such as depression, anxiety, thyroid disease, autoimmune disease, vascular disease, sleep apnea, neck pain, TMJ, or other pain conditions. These conditions may influence migraine burden in some individuals.
Can tracking help me understand what causes my migraine attacks?
Tracking may help you identify patterns around specific attacks, including sleep, stress, weather, hormones, sensory input, meals, hydration, and recovery. It may not reveal one single cause, but it can help you notice what tends to repeat.
How does the Aevere Ritual System connect to migraine causes and triggers?
The Aevere Ritual System helps translate pattern awareness into simple, repeatable support routines. If tracking helps you recognize what tends to happen before, during, or after migraine, the Ritual System helps you build supportive habits around those patterns.
