The Migraine Treatment Guide Podcast

Headaches After Illness Like COVID Explained

Adam Lowenstein, MD Episode 21

Use Left/Right to seek, Home/End to jump to start or end. Hold shift to jump forward or backward.

0:00 | 12:37

A headache shows up with a cold and then refuses to leave for years. That sounds like a neurological mystery, but we walk through a different possibility: a purely mechanical problem at the base of the skull where the greater occipital nerve travels through a tight, crowded corridor of muscle, fascia, blood vessels, and occipital lymph nodes.

We connect the dots from reactive lymphadenopathy after infections (including Epstein-Barr, COVID, and other common viruses) to a surprising long-term outcome: a lymph node that stays enlarged and gradually becomes firm, fibrotic, and scarred. In that hardened state, it can press on or grind against the greater occipital nerve every time you move your head, creating relentless sharp, throbbing pain that gets mislabeled as chronic tension headache or intractable migraine. We also unpack why standard imaging can miss it, because MRI and CT are designed to find dangerous pathology, not subtle millimeter-level compression of a tiny peripheral nerve by a benign structure.

From there, we get practical about diagnosis and next steps: symptom mapping, a hands-on exam that can sometimes find a palpable firm node, and the diagnostic greater occipital nerve block that can temporarily “turn off” the pain and prove the source is peripheral. We reference clinical documentation from headache surgery.com, the work of Dr. Adam Lowenstein at the Migraine Surgery Specialty Center, and published surgical case reports that show how removing a scarred node and freeing the nerve can meaningfully reduce symptoms for the right patient.

If you or someone you love has a headache that started after an illness and never let up, listen through and share it with them. Subscribe, leave a review, and tell us: have you ever had a “normal scan” but very real pain?

If you suffer from chronic headache after COVID or other illness, know that there is hope.  Learn about nerve decompression for chronic headaches at headachesurgery.com or call Dr. Lowenstein's Clinic at 805-969-9004 for an in-person or virtual appointment.

When The Headache Never Leaves

SPEAKER_01

Imagine getting a standard cold or viral illness. You can get the sniffles, maybe a fever, and of course a headache.

SPEAKER_02

Right. The usual symptoms.

SPEAKER_01

Yeah, exactly. And the sniffles clear up in a week or two. You're officially better. But um the headache that came with it, it just never leaves.

SPEAKER_02

It just sticks around.

SPEAKER_01

Months or even years later, you still have this sharp, throbbing pain right at the base of your skull. You honestly start to think you've developed some sort of invisible, untreatable neurological condition.

SPEAKER_02

Aaron Powell And patients in this situation, they often go through a really torturous cycle. They get labeled with chronic tension headaches or intractable migraines. Exactly, intractable migraines. And so they spend a decade trying all these different neurological medications, never realizing the root of the problem isn't actually in their brain chemistry at all.

SPEAKER_01

Aaron Powell Which brings us to the core of today's deep dive. We are looking at a completely hidden, entirely mechanical cause for these chronic headaches, specifically persistently enlarged lymph nodes that are physically compressing the greater occipital nerve, or the G O N.

SPEAKER_02

It's a really fascinating mechanical issue.

SPEAKER_01

It really is. And our information

A Mechanical Cause In The Neck

SPEAKER_01

today comes from clinical documentation from headache surgery.com. We're highlighting the work of Dr. Adam Lowenstein at the Migraine Surgery Specialty Center in Santa Barbara, along with some published surgical case reports.

SPEAKER_02

Some really great source material.

SPEAKER_01

Yeah, and the mission of this deep dive is to understand this hidden mechanical cause of chronic pain and why it goes misdiagnosed for so long. Okay, let's unpack this. Because before we can understand why the pain stays, we really have to understand the physical neighborhood where this is happening.

SPEAKER_02

Right. The geography of the neck is everything here. We need to trace the path of the greater occipital nerve. So it originates deep in the neck, right at the second cervical nerve root. Okay. And to get to the surface where it actually provides sensation to your

Mapping The Greater Occipital Nerve

SPEAKER_02

scalp, it has to push its way upward through several really dense layers of neck muscle. And it eventually hits a ceiling that it has to punch through. It hits the trapezius fascia, which is this really tough, thick band of connective tissue right at the base of the skull. Oh, wow. The nerve literally has to pierce that fascia to fan out across the back of your head. And, you know, it's in this transition zone that the real trouble starts because the nerve isn't traveling alone.

SPEAKER_01

He's got company.

SPEAKER_02

Lots of it. It shares this incredibly tight space with blood vessels, thickened fascia, tight muscles, and a chain of occipital lymph nodes.

SPEAKER_01

And those lymph nodes are basically the body's little immune system outposts, which is where that initial cold or virus enters the story.

SPEAKER_02

Right.

SPEAKER_01

Because if you get sick, maybe you know per respiratory infection or a scalp infection or even mononucleosis from Epstein Barr. Trevor Burrus, Jr.

SPEAKER_02

Or even childhood viruses like rubella or chickenpox.

SPEAKER_01

Yeah, exactly. Those immune outposts, they have to react.

SPEAKER_02

They go to war. The immune cells inside those nodes multiply rapidly to fight off the invader, and that causes the nodes to physically swell. It's a medical process called reactive lymphodenopathy.

SPEAKER_01

Think of this area of the neck like a really narrow, crowded hallway.

SPEAKER_02

Okay.

SPEAKER_01

The nerve is just trying to walk through minding its own business. But suddenly, because of a cold, a lymph node puts on a giant backpack and traps the nerve against the wall.

SPEAKER_02

I love that analogy. It's perfectly accurate. Because in a typical scenario, the infection clears, the immune response dials down, and over two to four weeks, the swelling resolves.

SPEAKER_01

The node takes the backpack off.

SPEAKER_02

Exactly. It shrinks back down, and the nerve has room to glide freely again. The headache vanishes right along with the cold.

SPEAKER_01

But wait, this is where I get a bit tripped up on the mechanics. A normal swollen lymph node, like when you feel the side of your neck during a sore throat, is pretty soft. It's squishy tissue. Right, it's very pliable. So nerves might be small, but how does a soft, squishy immune gland muster enough mechanical force to crush a nerve and cause years of debilitating migraines? I mean, it doesn't seem like it has the density to do that kind of damage.

SPEAKER_02

Well, if the node stayed soft and squishy, it probably wouldn't. But in the subset of patients we're discussing today, the node doesn't just stay enlarged. Its fundamental texture actually changes.

SPEAKER_01

It hardens.

SPEAKER_02

Yes. Over time, for reasons we're actually still studying, the node

When A Node Turns Fibrotic

SPEAKER_02

can become firm, fibrotic, or heavily scarred. The underlying illness is long gone, but the node essentially hardens into a rock.

SPEAKER_01

So the backpack doesn't just stay on, it turns into concrete.

SPEAKER_02

Basically, yes. And since that greater occipital nerve needs to physically glide every time you turn your head, nod, or speak, it's now constantly dragging against a firm mass.

SPEAKER_01

That sounds agonizing.

SPEAKER_02

It really is. Every time you move, or even when the adjacent blood vessel pulses, that stiff fibrotic lymph node grinds against the nerve trunk. And worse, the scar tissue can actually tether the node to the surrounding fascia, anchoring it right in place.

SPEAKER_01

So it's totally trapped.

SPEAKER_02

Exactly. The nerve interprets that constant friction as chronic irritation. So it fires off a continuous stream of sharp throbbing pain signals. What's fascinating here is that this persistent node doesn't have to be dangerous or cancerous to cause debilitating chronic irritation to the nerve.

SPEAKER_01

Right. It's just completely benign leftover structural damage from a past immune battle, kind of acting just like a tumor would by occupying space it shouldn't.

SPEAKER_02

Which brings us to the psychological toll of this entire ordeal. Because you have a patient suffering from agonizing daily head pain. Naturally, they go to a neurologist.

SPEAKER_00

They get the standard workup, MRI, CT scans, all of that.

SPEAKER_02

Right. And time and time again, the doctor looks at those scans and says, good news, everything is clear, your brain looks totally fine.

SPEAKER_01

Man, the patient is left feeling like

Why MRI And CT Look Normal

SPEAKER_01

they're just making it up while this fibrotic node is quietly crushing their nerve. But wait, if standard scans miss this entirely, how does a doctor actually confirm the lymph node is the culprit without just guessing and cutting you open?

SPEAKER_02

Well, we first have to look at how imaging technologies are designed. When a doctor orders an MRI for severe chronic head pain, the radiologist is hunting for dangerous red flags.

SPEAKER_01

Like brain tumors or aneurysms.

SPEAKER_02

Exactly. Active disease processes. Standard imaging is highly optimized to catch pathology.

SPEAKER_01

So they aren't looking at the millimeter by millimeter spacing in the neck tissue.

SPEAKER_02

They aren't. Think about the resolution of an MRI. A typical scan might take image slices that are three to five millimeters apart. The greater occipital nerve is only about two millimeters thick.

SPEAKER_00

Oh wow.

SPEAKER_02

And the enlarged lymph node might only be one centimeter across. It's entirely possible for the slice to capture the node, but completely miss the exact point of compression on the nerve.

SPEAKER_01

And a benign node wouldn't look like cancer anyway, right?

SPEAKER_02

Right. It just looks like a slightly prominent but otherwise normal anatomical structure. The scam gets stamped as normal.

SPEAKER_01

So neither the patient nor the doctor connects today's headache to an infection from years ago.

SPEAKER_02

Right. The timeline is so disconnected. A neurologist will ask about family history, stress, diet. They don't typically ask, hey, did you happen to have a rough bout of Epstein-Barr virus three years ago, right before the headache started?

SPEAKER_01

So we're stuck in a diagnostic blind spot. How do you actually prove the nerve is trapped?

SPEAKER_02

You shift away from imaging. The actual diagnostic path relies on symptom mapping and a diagnostic greater occipital nerve block.

SPEAKER_01

A nerve block. So they inject a local anesthetic, like what they use at the dentist, but at the base of the skull.

SPEAKER_02

That is the exact mechanism. The physician injects numbing medication directly into

Proving It With A Nerve Block

SPEAKER_02

the tissue surrounding the greater occipital nerve, right at the suspected compression site.

SPEAKER_01

Just to see if the headache temporarily turns off.

SPEAKER_02

Exactly. It is purely an information gathering mission.

SPEAKER_01

It's like finding a kink in a long garden house. If you patch the hose near the nozzle and the water suddenly flows fine, you know the problem isn't all the way back at the faucet.

SPEAKER_02

That's a great way to put it. If the patient gets significant temporary relief from that block, even if it only lasts for a few hours, it proves the compression is peripheral.

SPEAKER_01

Meaning it's right there at the skull base rather than closer to the spine or in the brain.

SPEAKER_02

Right. And from there, a physical exam can often identify the firm, palpable node. The doctor can physically feel the trap with their hands.

SPEAKER_01

Because it's hard and fibrotic now.

SPEAKER_02

Exactly. This raises an important question about how we differentiate between a normal sick node and a chronic compressive one.

SPEAKER_01

That's a crucial distinction, especially for anyone listening who might be poking the back of their own neck right now.

SPEAKER_02

Oh, definitely. The sources highlight the timeline and the pain pattern. A self-limited normal node swells for a few weeks and gradually softens. Right. A compressive node remains enlarged, doesn't shrink, and hardens over months or years, and the pain is different too.

SPEAKER_01

Mild diffuse tenderness versus chronic sharp throbbing pain. Right.

SPEAKER_02

Exactly. It behaves like localized nerve damage, not just a swollen gland.

SPEAKER_01

Here's where it gets really interesting. Moving from theory and diagnosis to actual physical proof. Because headache surgery.com actually features a gallery of intraoperative photographs.

SPEAKER_02

Yes, from the actual nerve decompression surgeries.

SPEAKER_01

Right. These photos physically document lymph nodes sitting directly on the G O N trunk, visibly

Surgical Proof And Patient Outcomes

SPEAKER_01

compressing it. You can see it.

SPEAKER_02

It stops being this abstract neurological condition when you look at those images. You can visibly see the physical indentation on the nerve where this mass has been crushing it for years.

SPEAKER_01

Just sitting there, totally validating everything the patient has been feeling. And the expert brings in a specific striking case from these files that I found incredible.

SPEAKER_02

You mean the tag team scenario?

SPEAKER_01

Yeah. A patient where a lymph node and a compressive blood vessel were tag teaming the same nerve.

SPEAKER_02

It was the ultimate crowded hallway. But during the procedure, the surgeon excised the scarred lymph node and managed the blood vessel.

SPEAKER_01

Removing both of them.

SPEAKER_02

Yes, taking all the pressure off. And it led to a marked reduction in her headaches and the complete resolution of the visual disturbances and nausea that accompanied her migraines.

SPEAKER_01

That's amazing. And there's outside validation too, right?

SPEAKER_02

There is. The documentation references a 2011 case report published in the Journal of Plastic Reconstructive and Aesthetic Surgery by CEO and colleagues.

SPEAKER_01

Okay, so a totally separate study.

SPEAKER_02

Exactly. Now this documented a reactively enlarged node compressing the lesser occipital nerve rather than the greater, but it proves the exact same underlying principle.

SPEAKER_01

That an old illness can leave behind a mechanical, correctable source of migraines.

SPEAKER_02

Right. The treatment is excision. The surgeon carefully exposes the nerve and removes the offending node and fibrous tissue to create space.

SPEAKER_01

What does this all mean? We often think of chronic migraines as an invisible, untreatable neurological curse.

SPEAKER_02

A lot of people feel like it's just a chemical imbalance they have to live with.

SPEAKER_01

But sometimes it's just leftover scaffolding from a cold you beat three years ago. So if you are listening to this and you've had a headache that set up shop after an illness

Key Takeaways And Self Advocacy

SPEAKER_01

and never left, it's worth considering mechanical compression.

SPEAKER_02

Absolutely. You have to advocate for yourself. If traditional neurological treatments are failing, ask about a diagnostic nerve block.

SPEAKER_01

Right. Which leaves you with a final lingering question to chew on. If our own immune system's leftover debris can cause years of excruciating, misdiagnosed pain simply by pressing on a nerve in the neck.

SPEAKER_02

It's a wild thought.

SPEAKER_01

It really is. It makes you wonder how many other chronic, unexplained conditions in our bodies are just simple mechanical traffic jams that our advanced medical imaging isn't designed to see?