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Headaches are not one condition. A migraine, a headache coming from the neck, a headache following a head impact, and a headache sustained by the medication taken for it all need different treatment, and sorting out which you have can be more challenging than it may seem. That is especially true after an injury, when more than one type is often present at once.
At Injury Care Centers, treating pain and injuries is all we do. Our Green Cove Springs clinic on Branscomb Road takes walk-in patients on weekdays, with X-ray and neurological testing available in the practice.
Figuring out what kind of headache you’re dealing with is the key to getting relief. It’s a step many people, and even some clinics, tend to skip, but it makes all the difference.
Migraine isn’t just a bad headache; it’s a neurological condition. Most people describe it as throbbing pain, usually on one side, that gets worse with movement. You might also feel nauseous or be extra sensitive to light and sound. Some folks even notice weird visual changes or tingling before the pain starts.
Cervicogenic headaches actually start in your neck, even though you feel the pain in your head. They usually begin at the base of your skull and travel forward, often sticking to one side. You might notice the pain gets worse when you move your neck or hold it in one position for a while.
Post-traumatic headaches show up after you’ve hit your head or had a big whiplash injury, like in a car accident. These can feel like migraines or tension headaches, but what really sets them apart is that they start after an injury.
Occipital neuralgia causes sharp, shooting, or electric-like pain at the back of your head. You’ll often feel tenderness right where the nerves pass through the muscles at the base of your skull.
Tension headaches feel like a tight band wrapping around both sides of your head. They usually don’t come with nausea or sensitivity to light, as migraines do. There’s also something called medication-overuse headache; this happens when taking pain meds too often actually keeps the headaches coming.
It’s also common to have more than one type of headache at the same time, especially after an accident. That’s why headaches after an injury can be trickier to figure out than the headaches you might get otherwise.
Yes, and it is common. The nerves supplying the upper neck and those supplying parts of the head share the same territory in the brainstem, so signals from the upper cervical joints get perceived as pain in the head. A headache that starts at the base of the skull and travels forward, provoked by neck movement or sustained posture, is the classic pattern.
Several features point that way. Pain starting at the base of the skull and moving forward, a headache provoked by neck movement or by holding a position, restricted rotation on the same side, and tenderness over the upper cervical segments. It also explains the failure pattern people arrive with: headaches treated as migraine and only partially responding, in somebody whose neck has never been examined.
The practical implication is straightforward. The neck is the treatable end of that problem, and treating it addresses the source instead of the symptom.
It explains something else people find confusing, which is a headache with no neck pain at all. Referred pain does not require the source to hurt, so an upper cervical joint can be restricted and irritable while producing nothing you would describe as neck pain. That is why we examine the neck in every headache assessment instead of only when somebody complains of it.
There are a couple of common parts of working life around here that can often lead to headaches. The good news is, both are things you can actually do something about, unlike a lot of other headache triggers that feel out of your control.
The first big trigger may be shift work. In industries like freight and manufacturing, the job doesn’t stop at 5 p.m., so many people work rotating shifts. Unfortunately, your body never fully adjusts to these changes, and your sleep pattern suffers. Sleep is one of the biggest factors in all types of headaches, not just how much you get, but also how regular it is. If your wake-up time shifts by a few hours from week to week, it can set you up for headaches all on its own.
We hear from a lot of people on rotating shifts that they tend to get headaches right after their schedule changes, then things settle down for a bit, and the headaches come back with the next rotation. This pattern is actually helpful for us to know; it usually means the schedule is the culprit, not something physically wrong.
The second common trigger is night driving, especially on country roads. Driving in the dark on unlit, two-lane roads takes a lot of focus, constantly scanning for animals, staying alert for oncoming headlights, and watching the road’s edge. All that concentration makes you tense up the muscles at the base of your skull and around your eyes, and you end up holding your head stiff and forward for the whole drive.
If you’ve already had a long day before you hit the road, those muscles are even more tired. The headache that creeps in an hour after you get home is usually this type, and it’s easy to mistake it for eye strain.
When you come to us, we’ll ask about these triggers, because sometimes small changes make a big difference. Keeping your wake-up time as steady as possible, even during shift changes, can help. Taking breaks on long night drives or addressing neck tension can reduce how often these headaches show up. While these steps aren’t a magic fix, knowing what’s behind your headaches gives you more control and helps us figure out the best way forward before considering bigger interventions.
Headache is the most common symptom after a concussion, and the two need to be considered together.
A concussion does not require losing consciousness, and most do not involve it. It also does not require striking your head, since the rapid acceleration of a whiplash mechanism is capable of producing one on its own. Symptoms beyond headache complete the picture: difficulty concentrating, feeling mentally slowed, sensitivity to light or noise, dizziness or unsteadiness, irritability, and sleep that has changed since the event.
Symptoms often appear or worsen over the days after an injury instead of immediately, which mirrors the delayed onset pattern seen across crash injuries often.
Our practice offers brain injury evaluation, EEG and nerve conduction studies, along with digital X-ray in the building and MRI at our University Boulevard South location in Jacksonville, so an assessment that raises a question can, in most cases, answer it without sending you elsewhere.
Anyone whose headache after a head injury is steadily worsening, or who is repeatedly vomiting, confused, or increasingly drowsy, needs emergency assessment instead of an appointment.
Yes, rapid acceleration and deceleration of the head in a whiplash mechanism can produce a concussion without any direct impact. Loss of consciousness is not required either, and most concussions do not involve it. If you have felt foggy, unusually tired, irritable, or light-sensitive since a crash or a fall, that information is helpful for evaluation, whether or not anything struck your head.
It is a recognized pattern where frequent use of pain relief contributes to more frequent headaches, which prompts more frequent use. The clue is, as a rule, frequency instead of severity: headaches on most days of the month, in somebody taking something for them on most days of the month. Any change to medication is a decision for your prescriber, made with a plan.
The mechanism is a loop that establishes itself gradually, without any single decision that looks wrong.
It is useful to know plainly what this is not. It is not a suggestion that anybody has done something foolish, and it is not a claim that pain relief is harmful. It is a recognized clinical pattern that develops from an entirely reasonable response to pain.
Nothing on this page is a reason to stop or reduce any medication on your own. Changes to prescribed medication are a decision for the prescriber, made with a plan, and stopping some medications abruptly is unwise. What we would ask is that you bring an honest account of how often you are taking something, because that answer changes what we recommend.
The first visit is an assessment, and most of it is history instead of testing.
Your clinician asks where the pain is, what it feels like, how long episodes last, what brings them on, what makes them better, what else happens alongside them, when they started, and what has changed since. That set of answers does most of the classification. Then the physical examination: cervical range of motion measured instead of estimated, palpation of the upper cervical segments and the muscles at the base of the skull to see whether your headache can be reproduced, a neurological screen covering cranial nerves, reflexes, strength, sensation, and coordination, and balance testing where a concussion is in question.
Reproducing your headache by pressing on a specific segment is one of the more useful findings available, because it points at a source instead of describing a symptom.
Imaging is not routine for headache and is ordered where a specific question needs answering. EEG and brain injury evaluation are available where the presentation warrants them.
Can a doctor tell what kind of headache I have without a scan?
In practice, yes. Headache classification is made primarily from the history and the physical examination, including whether the headache can be reproduced from the neck. Imaging is used to answer a specific question instead of to make the diagnosis.
Treatment follows the classification, which is why the classification matters.
Where the neck is the source, treatment is aimed there: chiropractic care for the upper cervical segments, manual and soft-tissue work for the muscles at the base of the skull, and the deep neck stabilizer work that stops the restriction from returning. That last part is what determines whether relief lasts past a few days. Where a nerve is involved, as in occipital neuralgia, treatment addresses the tissue around it along with the mechanical factors loading it.
Supporting therapies are chosen based on the findings: photobiomodulation laser therapy, TECAR, HEIT, electrical muscle stimulation, and therapeutic ultrasound.
Where headaches are not responding to conservative care, interventional pain management and prescribing are available inside the practice, so escalation is a conversation instead of a referral and a wait.
For migraine specifically, the work often combines identifying and reducing triggers, addressing any neck component contributing to the pattern, and medical management where appropriate. Sleep, hydration, meal timing, and stress all belong in that conversation, not as a substitute for treatment but because they measurably affect frequency.
We will also tell you when the answer is somewhere else. A presentation that points at a primary neurological problem needs the appropriate specialist, and recognizing that is part of the assessment instead of a failure of it.
The diary is the most useful piece of homework in this whole area, and it takes about a minute a day.
Record five things for each headache: the date, roughly how long it lasted, where the pain was, what you took (if anything) and how much, and what you were doing in the hours beforehand.
Add sleep and meals if you can manage it, because both show up as patterns more often than people expect. If you work shifts, note which shift you were on, because that single column often explains the whole pattern.
What we do with it is look for structure instead of reading it as a list. Frequency tells us whether medication use is part of the pattern. Timing and triggers separate migraine from a neck-driven headache. Duration and side distinguish the categories further.
Two weeks is usually enough to be useful, and four is better. The diary also becomes the baseline against which treatment gets measured, which matters because memory for headaches is unreliable in a specific direction: people consistently underestimate improvement, because a good week does not leave the impression a bad day does.
Trigger hunting can become its own problem, so it is useful to know about systematic approaches instead of eliminating things one at a time forever.
Sleep is the most consistent factor across headache types, and both directions matter. Too little sleep and a substantially changed sleep schedule are each capable of provoking headaches.
Hydration and meal timing are useful to test because they are easy to change and because skipped meals are a common provoker. From May through September, plenty of people here do not drink enough for the amount they sweat, and outdoor and industrial work makes that worse.
Screen and visual load usually acts through the neck instead of the eyes. Sustained forward head posture, whether at a monitor or peering down an unlit road, loads exactly the upper cervical segments that refer pain into the head.
Test one thing at a time and give each two weeks, using the diary to judge instead of your impression. Changing four things at once and feeling better tells you nothing about which one mattered, and it usually means keeping all four indefinitely.
Not everybody arrives within weeks of an injury. A large share of the headache patients we see have had them for years, often since an accident nobody connected them to.
Long-standing headaches are still helpful to know, and the reason is the same as for recent ones: the classification may never have been done properly. A headache treated as migraine for a decade, in somebody whose neck has never been examined, is useful to know about.
Old injuries matter here. A whiplash injury from years ago often leaves a segment that never regains its mobility, and the compensation around it builds quietly. The headaches can start long after the original event and still be connected to it.
Medication history matters just as much. Years of frequent pain relief can become part of the pattern, and identifying that changes the plan more than any treatment does.
We would still start with the same assessment: the history, the neck examination, and whether your headache can be reproduced from a specific segment. Being told for years that nothing can be done is not the same as having been examined properly.
Head impacts arrive here year-round, in a climate with no real off-season.
Sport-related concussion often goes unreported, partly because symptoms are mild at first and partly because there is a game happening. “Shook it off” describes a decision instead of an assessment.
Repeated impacts matter more than any single one. Returning to contact before symptoms have fully settled is the most concerning situation, and it is why return-to-activity decisions are staged rather than made in one go.
Headaches after non-contact recreational activity are usually a different matter, often relating to neck position, exertion, heat, or dehydration, all of which are worth separating before anything else is considered.
A headache that started with a sporting impact gets the same evaluation as one that started in a car. The full range of injuries across the practice is on our injury clinic page.
Most headaches are not emergencies. A small number are, and these are the ones to act on without hesitation.
Call 911 or go to the nearest emergency room for a sudden, severe headache that peaks within seconds; a headache with fever and a stiff neck; a headache with confusion, difficulty speaking, weakness on one side, or vision loss; a headache after a head injury that keeps worsening; repeated vomiting; a seizure; or a headache with loss of consciousness.
A headache that is different from anything you have had before, or the worst you have ever experienced, is worth treating as urgent rather than waiting to see.
Clay County’s trauma center is HCA Florida Orange Park Hospital, north of this city.
It depends on how the headaches started. After a car accident in Florida, your own auto insurance covers medical care as long as you are seen within 14 days, and post-crash headaches are one of the most common reasons people come in. For a work injury, workers’ compensation usually applies. For headaches that developed over time, health insurance is the normal route.
Under Florida’s no-fault law, auto insurance medical benefits are available only where you receive initial services and care within 14 days of the accident.
That deadline catches headache patients out more than most, because post-crash headaches often start a day or two later and then a week disappears dealing with the car.
We see patients with or without insurance. If you do not have coverage, call 904-783-0008 and ask about our Affordable Plans.
| Clinic | Address | Weekday hours |
|---|---|---|
| Green Cove Springs | 91 Branscomb Rd, Suite 1 | 8:00 am to 7:00 pm |
Our Green Cove Springs clinic serves the city along with Fleming Island, Middleburg, Penney Farms, and the surrounding Clay County communities.
Headache treatment usually means several visits instead of one. Telemedicine covers review conversations where a physical examination is not the point, which is useful when light sensitivity makes a drive its own problem, and useful again if your shift pattern makes daytime appointments hard.
No appointment is needed on weekdays, and after-hours on-call assistance with our doctors is available.
Yes, nerves from the upper neck and parts of the head share territory in the brainstem, so upper cervical joint problems are often perceived as a headache.
You can, but it's not necessarily a routine procedure. Classification comes from the history and examination, and imaging is used to answer a specific question when one arises.
Often a day or two later, since inflammation and muscle guarding build over the first 24 to 72 hours instead of appearing immediately.
Yes, rapid acceleration of the head, as in a whiplash mechanism, can produce a concussion without any direct impact.
A recognized pattern where frequent use of pain relief contributes to more frequent headaches. Any change to medication is a decision for your prescriber.
Often it is part of it. A wake time that moves substantially between weeks is a recognized headache trigger, and it is more adjustable than most.
Yes, we see patients with or without insurance. Call 904-783-0008 and ask about our Affordable Plans.
Our practice has treated injuries and nothing else since 2010, and headaches are where that focus produces the most useful difference: a headache arriving after an injury is often treated as a headache in general, when in reality it should be examined as a consequence of what happened to the neck.
Injury Care Centers classifies before treating and examines the neck in every case, not only when it is the presenting complaint. Brain injury evaluation, EEG, and digital X-ray are available within our practice. Medical management and interventional options are available without a referral. Dr. John D’Amico is the chiropractic physician covering Green Cove Springs.
The single most useful thing you can bring to a first appointment is two weeks of notes: what days you had a headache, how long each lasted, what you took, and what your sleep and your shift looked like beforehand. It is a short piece of homework, and it often identifies the pattern faster than anything that happens in the room.
Come to Branscomb Road on any weekday, call 904-783-0008 to ask about it first, or find addresses and hours for all our locations.
Last reviewed: August 2026
Medically reviewed by Dr. James Gilas, MD, Florida license no. ME92179
This page is general information and not a substitute for an exam by a clinician. If you have emergency symptoms, call 911 or go to the nearest emergency room.
Florida law described here is general information, not legal advice. Deadlines and rights depend on your situation, and a lawyer is the right person to advise you on a claim.
