What Is Causing My Neck Pain and Headache?

Your neck hurts and your head does too, and you want to know whether one is causing the other. Cleveland Clinic and NCCIH each say something about it, and each leaves part of the question open.
What the two sources document
Cleveland Clinic lists headache among the other symptoms that can come with neck pain.
Other symptoms Neck pain may involve other symptoms, including: Headache.
That shows the two symptoms can occur together. It does not say that one causes the other. NCCIH goes further, but only for one type of headache.
Spinal manipulation may reduce the frequency and intensity of cervicogenic headaches (head pain that originates from a problem in the neck).
Reading the word cervicogenic
The word describes where the head pain starts: a problem in the neck, in NCCIH's own definition. A headache earns that label only when the neck is the origin. The wording is also hedged. NCCIH writes "may reduce," not "will reduce."
Putting the evidence to use
Ask a clinician whether your headache could originate in the neck and how they would tell. In Totowa and nearby towns, bring a record of when each symptom started and which came first. Then read Spine-health's page on what drives neck pain, MedlinePlus's neck injuries and disorders hub, Cleveland Clinic's neck pain overview and WebMD's pain management center against the two statements above.
A diagnostician's note
Two symptoms appearing together is documented. Neither source says one symptom causes the other, and NCCIH hedges its treatment wording with "may reduce." You can confirm both points alone by reading the Cleveland Clinic and NCCIH pages.