How Early Life Stress Affects Migraine Risk

Migraine is often thought of as a neurological disorder influenced by genetics, hormones, and environmental triggers. However, growing research suggests that experiences early in life—especially stress and trauma—may play a significant role in shaping a person’s risk of developing migraine later on.

Pediatric neurologist and researcher Dr. Serena Laura Orr has been studying the relationship between early life stress and migraine for years. Her work explores how adverse childhood experiences (ACEs) and other stressors may influence brain development and increase the likelihood of headache disorders.

Understanding this relationship could transform how we think about migraine—not simply as a disorder of pain, but as a condition shaped by the interaction between life experiences, brain development, and biology.

What Are Adverse Childhood Experiences (ACEs)?

Adverse childhood experiences—commonly known as ACEs—are stressful or traumatic events that occur during childhood.

The traditional ACE framework groups these experiences into three broad categories:

Abuse

• Physical abuse

• Emotional abuse

• Sexual abuse

Neglect

• Emotional neglect

• Physical neglect

Household dysfunction

• Living with someone with mental illness

• Domestic violence in the home

• Parental divorce

• Having a family member incarcerated

These early experiences can shape emotional, psychological, and physical health outcomes across a person’s lifetime.

In recent years, researchers have begun expanding the concept of ACEs to include community and environmental stressors, such as poverty, systemic discrimination, lack of access to resources, or exposure to natural disasters.

Early Trauma and Migraine Risk

Multiple studies have shown a strong association between ACEs and headache disorders.

A large systematic review published in 2023 found that people exposed to ACEs during childhood have about a 50% higher likelihood of developing a headache disorder, including migraine, later in life.

Some types of early adversity appear to be particularly influential. Research suggests that emotional abuse and neglect may be among the strongest predictors of later migraine risk.

One of the most striking findings from this research is the presence of a dose-response relationship.

This means the risk increases with the number of adverse experiences.

For example:

• One ACE exposure increases migraine risk by roughly 25%

• Three or more ACEs can double the risk of developing headache disorders

This pattern suggests that cumulative stress during childhood may play a meaningful role in shaping neurological vulnerability.

Early Life Stress in Childhood and Adolescence

Dr. Orr’s research has taken a unique approach by studying children over time rather than asking adults to recall childhood experiences decades later.

Using a large Canadian population dataset, researchers followed children from infancy through adolescence to track both early stress exposure and later migraine development.

One study focused on lower-level household stress, such as:

• ongoing conflict in the home

• harsh parenting styles

• parental depression

In this case, the connection between stress and migraine appeared to be indirect. Children exposed to these stressors were more likely to develop anxiety and depression in middle childhood, which then increased the likelihood of migraine during adolescence.

However, when researchers examined traditional ACEs, the findings were different.

Severe trauma during the first seven years of life was linked to a direct increase in migraine risk, even when mental health conditions were not part of the pathway.

This suggests that major early trauma may affect migraine risk through biological changes in brain development, rather than only through psychological factors.

How Trauma May Change Brain Development

Researchers believe that early trauma may influence migraine risk through changes in how the brain develops during childhood.

Two major pathways are currently being explored.

1. Stress and the Brain’s Threat Response

Experiences involving danger—such as abuse or violence—can activate the brain’s stress response systems.

These include:

• the sympathetic nervous system (fight-or-flight response)

• the hypothalamic-pituitary-adrenal (HPA) axis

• the release of stress hormones such as cortisol

When a child grows up in a threatening environment, these systems may remain chronically activated.

Over time, the brain may become more reactive to stress and sensory stimuli, which could increase vulnerability to migraine attacks.

2. Deprivation and Brain Development

Other ACEs involve neglect or deprivation, where a child lacks stimulation, care, or resources.

During early childhood, the brain forms far more neural connections than it ultimately needs. As development progresses, the brain undergoes a process called synaptic pruning, where unnecessary connections are eliminated to strengthen important neural pathways.

In severely deprived environments, this pruning process may occur differently, leading to underdevelopment in certain brain regions.

These developmental differences could influence how the brain processes stress, pain, and sensory signals later in life.

Could Migraine Be an Adaptive Response?

One intriguing theory proposed by researchers is that migraine may sometimes represent an adaptive response to a threatening environment.

When exposed to danger, the brain’s goal is survival—not comfort.

Migraine attacks often cause people to:

• withdraw from stimulation

• seek quiet, dark environments

• avoid stressful surroundings

From an evolutionary perspective, these responses may have helped individuals protect themselves during threatening conditions.

While this idea remains theoretical, it offers a new way of thinking about migraine—not as a personal failure or weakness, but as a protective brain response shaped by early experiences.

The Most Sensitive Period for Brain Development

Research suggests that the first five years of life may be the most sensitive period for environmental influences on brain development.

During these early years:

• the brain undergoes rapid growth

• neural connections are constantly forming and pruning

• myelination (the insulation of nerve pathways) develops quickly

Because the brain is so adaptable during this time, early experiences—both positive and negative—can have lasting effects.

Studies examining epigenetic changes have even identified ages three to five as a particularly influential window, when stress exposure may alter how certain genes are expressed later in life.

Epigenetics: How Stress Can Influence Gene Expression

One of the most fascinating discoveries in modern science is the concept of epigenetics.

While genes provide the blueprint for our biology, environmental factors can influence how those genes are activated.

Early life stress may create epigenetic changes that affect:

• neurotransmitter systems

• hormone regulation

• brain stress pathways

These changes do not alter the DNA itself but instead influence how genes function.

In some cases, epigenetic patterns may even be passed from one generation to the next.

Intergenerational Effects of Trauma

Emerging research suggests that trauma may influence health outcomes across generations.

Parents who experienced severe stress or trauma during childhood may carry epigenetic changes that influence how their children’s genes function.

These changes may increase the risk of:

• mental health challenges

• chronic pain conditions

• stress sensitivity

Although research specifically examining migraine in this context is still developing, scientists suspect that intergenerational trauma may play a role in migraine risk.

Trauma and Migraine Severity

Early trauma may not only increase the risk of developing migraine—it may also influence how severe the condition becomes.

Some studies suggest that people with both migraine and trauma histories may experience:

• higher migraine frequency

• greater sensory hypersensitivity

• increased migraine-related disability

• higher rates of depression

Recognizing trauma history may help clinicians provide more personalized treatment and support.

Trauma-Informed Care for Migraine

Because trauma is so common—affecting an estimated 60% of people through at least one ACE—many experts recommend a trauma-informed approach to migraine care.

Trauma-informed care focuses on:

• recognizing the impact of trauma

• creating safe and supportive clinical environments

• empowering patients in treatment decisions

• validating patient experiences

Even simple questions such as:

"Have you experienced anything particularly difficult or traumatic in your life?"

can open the door to important conversations without forcing patients to revisit painful details.

The Power of Validation and Support

One of the most powerful tools in trauma-informed care is validation.

For many people living with both trauma and migraine, simply hearing that their experiences are real and understandable can make a profound difference.

Acknowledging that the brain may have adapted to survive difficult circumstances can help shift the narrative away from blame or shame.

Instead of viewing migraine as a personal flaw, it becomes part of the brain’s effort to cope with past experiences.

Protective Factors That Can Buffer Trauma

Not everyone exposed to early adversity develops migraine.

Researchers are increasingly interested in identifying protective factors that reduce risk, such as:

• strong social support

• safe and nurturing caregivers

• positive peer relationships

• stable home environments

• access to mental health resources

One of the most consistent protective factors identified in youth mental health research is surprisingly simple:

having at least one trusted adult to talk to.

This supportive relationship can significantly buffer the effects of early stress.

The Future of Research on Trauma and Migraine

Scientists believe that understanding the connection between early adversity and migraine could reveal new insights into the biology of migraine itself.

Future research aims to explore:

• how trauma alters brain networks involved in pain processing

• which protective factors reduce migraine risk

• how trauma-informed therapies may improve migraine outcomes

• how early childhood environments can promote resilience

If researchers can better understand how early experiences influence migraine, it may open the door to new prevention strategies and treatments.

A Message of Hope

For people living with migraine who have experienced early trauma, this research carries an important message.

Your brain is not broken.

Instead, it may have developed in ways that helped you survive difficult circumstances. Understanding that history can help guide more compassionate care, more personalized treatment, and greater resilience moving forward.

As research continues, the growing recognition of trauma’s role in migraine offers hope that future care will address not only symptoms—but also the life experiences that shape how migraine develops in the first place.