Bretz Chiropractic Clinic

Headache After a Car Accident: Whiplash, Concussion, and Warning Signs

July 31, 20269 min read

A new headache after a car accident deserves careful attention. It may be related to strained neck muscles or irritated neck joints, but it can also occur with a concussion or another injury that needs medical evaluation. The location or intensity of the headache alone cannot identify the cause.

If your headache is worsening, unusually severe, or accompanied by confusion, repeated vomiting, weakness, numbness, a seizure, slurred speech, unequal pupils, unusual behavior, or difficulty staying awake, call 911 or go to an emergency department now.

Why headaches can happen after a collision

During a crash, the head and neck may move rapidly even when the head does not strike a surface. Muscles, joints, ligaments, and other tissues in the neck can become irritated. Some people feel pain near the base of the skull that travels toward the forehead or behind an eye. Others notice tightness across the shoulders or pain that changes with neck movement.

A headache can also be one symptom of a mild traumatic brain injury or concussion. According to the CDC, concussion symptoms vary and may include headache, dizziness, nausea, vision problems, sensitivity to light or noise, fatigue, concentration difficulty, memory problems, mood changes, and altered sleep. Some symptoms appear immediately, while others are noticed hours or days later.

Because neck injury and concussion symptoms can overlap, it is safer to be evaluated than to assume that every post-crash headache is “just whiplash.” Delayed neck symptoms are common enough that we cover them separately in whiplash symptoms that show up weeks later.

Clues that may help the evaluation

A clinician may ask:

  • Did your head strike the headrest, window, steering wheel, or another object?
  • Did you lose consciousness, feel dazed, or have a memory gap?
  • When did the headache begin?
  • Is it improving, stable, or worsening?
  • Do neck movement or sustained positions change it?
  • Are you dizzy, nauseated, sensitive to light, unusually sleepy, or mentally foggy?
  • Do you have weakness, numbness, balance difficulty, or vision changes?
  • Are you taking blood thinners or other medications that could affect risk?

These questions do not diagnose the cause by themselves. They help determine whether emergency assessment, medical follow-up, imaging, or a musculoskeletal examination may be appropriate.

When chiropractic care may be considered

Chiropractic care does not diagnose or treat a concussion. A suspected concussion or other head injury needs appropriate medical evaluation and management.

When urgent conditions have been addressed and the examination suggests that neck joints, muscles, or movement are contributing to the headache, conservative care may be considered. The approach should depend on the person’s symptoms, examination, preferences, and medical guidance. Options may include gentle mobility work, activity guidance, therapeutic exercise, or a carefully selected whiplash treatment technique. Results vary. You can also read how care is structured with an auto accident chiropractor in Sarasota.

Treatment should never be used to delay emergency care or a needed neurologic evaluation.

What you can do while arranging care

  • Write down when the headache began and how it changes.
  • Note dizziness, nausea, light sensitivity, sleep changes, or concentration problems.
  • Follow emergency-department or medical instructions.
  • Avoid driving if symptoms affect vision, balance, alertness, or reaction time.
  • Avoid sports or activities that could cause another head impact until a qualified clinician clears you.
  • Ask a medical professional before changing medication use.

Plan the right next step

For non-emergency neck pain or headache concerns after a collision, call Bretz Chiropractic Clinic at (941) 921-2225 to discuss an appropriate evaluation, or contact the clinic. If emergency warning signs are present, call 911 instead.

“This content is for general educational purposes and is not a substitute for medical advice, diagnosis, or treatment.”

Frequently asked questions

Can a headache start days after a car accident?

Yes. Some neck-related and concussion symptoms may be noticed hours or days after an injury. New or worsening symptoms still deserve evaluation.

Does a normal scan rule out concussion?

Not necessarily. The CDC notes that brain imaging is not required to identify every mild traumatic brain injury. Imaging may be used when a clinician is concerned about bleeding, fracture, or another condition.

Can a chiropractor treat my concussion?

No. A concussion needs medical evaluation and appropriate management. Musculoskeletal neck care may be considered separately when it is safe and clinically appropriate.

When should I call 911?

Call 911 for a worsening headache that does not go away, repeated vomiting, seizure, weakness, numbness, slurred speech, unusual behavior, increasing confusion, unequal pupils, loss of consciousness, or inability to wake the injured person.

Ready to feel better?

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