Central Sensitization: Why Chronic Migraines Get Worse Over Time (and How to Reverse It)

One of the things that troubles me most about the way chronic migraines are commonly managed is how rarely people are told what is actually happening in their nervous system over time. Because the truth is important, even when it is uncomfortable. And the truth is this: chronic migraines, left unaddressed, change your brain.

Not permanently. Not irreversibly. But in ways that make migraines more frequent, more severe, and triggered by things that never used to bother you. Understanding this process is the first step toward reversing it.

What Central Sensitization Is

Central sensitization is a process by which the central nervous system — the brain and spinal cord — becomes hypersensitized to pain signals over time. Think of it as your brain’s pain volume being turned up.

With repeated migraine attacks, the neurons involved in pain processing become more excitable. They fire more easily, they fire more intensely, and they begin to respond to stimuli that would not normally cause pain. This is why people with chronic migraines often become increasingly sensitive to light, sound, smells, touch, and temperature over time. It is also why triggers that once were manageable become intolerable.

Research has found structural and functional changes in the brains of people with chronic migraine consistent with this sensitization process. The trigeminal pain pathways become chronically activated. The brain’s pain-modulating systems become less effective at dampening signals.

Why This Makes Medications Less Effective Over Time

Central sensitization helps explain a frustrating phenomenon many long-term migraine sufferers experience: over time, medications that used to work well seem to become less effective, while the migraines themselves become more frequent and harder to treat.

When the nervous system is sensitized, the migraine response is triggered more easily and requires more suppression to manage. This is one of the reasons that purely symptom-focused treatment — without addressing what is driving the underlying sensitization — often leads to an escalating medication burden over years.

The Good News: Neuroplasticity

Here is what I want you to hold onto: the nervous system is not fixed. It is plastic, meaning it can change. The same neuroplasticity that allowed it to become sensitized toward pain allows it to become desensitized when given the right inputs and support.

This is a well-established principle in neuroscience. The brain can be retrained. The sensitization is not a life sentence.

How Root Cause Work Addresses Sensitization

Reversing central sensitization requires more than reducing triggers. It requires lowering the overall inflammatory burden on the nervous system — because neuroinflammation feeds sensitization — and providing the nervous system with what it needs to regulate itself more effectively.

This means addressing gut health, because gut inflammation drives systemic and neurological inflammation. It means supporting hormonal balance, because estrogen fluctuation affects neurotransmitter regulation which affects pain modulation. It means addressing nutritional deficiencies like magnesium, which is directly involved in modulating NMDA receptor activity — a key pathway in central sensitization. It means supporting mitochondrial function in brain cells, because sensitized neurons have higher energy demands.

It also means working on what I call raising the migraine threshold. Every root cause we address adds to the ceiling before a migraine is triggered. As we do this work systematically, the threshold rises. Triggers that used to set off a migraine now pass without incident. The nervous system becomes resilient again.

If you have been suffering from chronic migraines for years and feel like they are only getting worse, this framework may be the most important thing you read this year. My free training walks through the full approach. I’d love to see you there: go.theheadachewhisperer.com/root-cause.

🌎 Ready to find your root cause? Join Dr. Myranda’s FREE training at go.theheadachewhisperer.com/root-cause