Headache intake forms ask what sets one off. Food, weather, sleep, hormones, stress. What almost nobody asks is when the headaches started and what was happening that year. Patients at Atlas Chiropractic in Fort Wayne usually answer that second question immediately once someone asks, and the answer is often a specific event: a rear-end collision, a fall on ice, a season of high school football, a delivery that required intervention. Headaches that began after something are a different picture than headaches that simply appeared.
Why does the onset story matter more than the trigger list?
Triggers describe what provokes an episode. Onset describes what created the susceptibility. Only one of those points toward a cause.
Someone whose migraines began in adolescence with a family history is describing a primary headache disorder. Someone whose headaches began four months after a car accident, having never had them before, is describing something else. The International Classification of Headache Disorders, now in its third edition from the International Headache Society, maintains whole categories for headaches attributed to trauma or injury to the head and neck for this reason.
What counts as an onset event?
Any force that loaded the head and neck, including ones that seemed minor at the time. People routinely dismiss the incident because they were not hospitalized.
Worth listing on paper: collisions of any speed, falls onto ice or stairs, sports impacts, a birth involving forceps or vacuum extraction, a hard fall in childhood, prolonged dental work with the jaw held open, surgery involving intubation and head positioning. The gap between events and symptoms is often long. Patients commonly report months or years, which is part of why the connection gets missed by everyone including the patient.
Is it a migraine or a cervicogenic headache?
Cervicogenic headache is head pain referred from a structural problem in the neck, classified separately from migraine in the ICHD criteria. The two overlap enough that misclassification is common.
Features leaning cervicogenic include pain that stays on one side without switching between episodes, onset at the base of the skull spreading toward the eye or temple, provocation by sustained neck positions or specific movements, reduced rotation to one side, and tenderness over the upper cervical joints. Nausea and light sensitivity occur with both, so those do not settle the question.
Why would a neck problem cause pain behind your eye?
Because of convergence in the brainstem. Sensory fibers from the upper cervical nerve roots and fibers from the trigeminal nerve, which supplies the face and front of the head, terminate in the same region.
The nervous system cannot always tell which input produced a signal arriving on a shared pathway, so an irritated joint at C1 or C2 gets felt in the forehead, temple, or behind the eye. That anatomy, described in research on the trigeminocervical complex by Bartsch, Goadsby and others, is the accepted explanation for why neck structures refer pain into the head at all.
Doesn’t almost everyone with migraine have neck pain?
Yes, and that is the real complication. Neck pain is common during migraine attacks and often appears in the hours before one starts, as part of the attack rather than its cause.
Neck symptoms alone prove nothing. What raises the question is the combination: a clear onset event, a side that does not change, restricted neck movement between episodes, and pain reproducible by position rather than only by the usual triggers.
How do you trace your own timeline?
Write it down before your next appointment. Memory reorganizes itself around symptoms and loses the ordinary events that preceded them.
Put down the year and, if possible, the month they began. List everything physical that happened in the eighteen months before, including incidents you walked away from. Note whether the side has ever switched. Track duration, location, and what position you were in when one started. A pattern that seems random in your head often resolves into something specific on paper.
What does Atlas Chiropractic examine?
Mechanism first, then measurement. The history focuses on how force entered the body and when symptoms followed, and the exam looks for objective, repeatable findings rather than impressions.
The NUCCA protocol, from the National Upper Cervical Chiropractic Association, uses precision imaging with the head set to a defined reference to quantify atlas position in degrees, alongside a supine leg check, postural assessment, and cervical range of motion. Follow-up imaging confirms whether the correction changed that measurement.
Some headaches need a physician urgently. Sudden severe onset, new headaches after age fifty, fever with a stiff neck, neurological changes, or a steadily worsening pattern all require medical evaluation first.
The question nobody asked may be the useful one. Atlas Chiropractic takes headache histories back to their starting point for Fort Wayne patients and evaluates the upper cervical spine when the timeline points there. Reach out through the site if your headaches begin after something. This page is educational and does not replace evaluation by your physician.