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WHY DO I HAVE A HEADACHE AFTER A MOTOR VEHICLE ACCIDENT?

October 10, 2026•3 min read

Headaches are one of the most common symptoms following a motor vehicle accident. Whether the collision was minor or severe, the sudden forces placed on the head and neck can strain muscles, joints, ligaments, and other soft tissues. In some cases, headaches may also be a sign of a concussion or another medical condition that requires prompt evaluation.

Key Insight:

A headache after a motor vehicle accident should never be ignored. While many post-accident headaches are related to injuries involving the neck, they may also result from a concussion, direct head trauma, jaw injuries, or, less commonly, more serious conditions. A comprehensive evaluation is important to determine the cause and guide appropriate treatment.

One of the most common causes is a cervicogenic headache, which originates from structures in the cervical spine. Injury to the joints, muscles, ligaments, or nerves of the neck may produce pain that radiates into the back of the head, temples, forehead, or around the eyes. These headaches are often accompanied by neck pain, stiffness, reduced range of motion, and discomfort that worsens with certain head movements.

Whiplash-associated disorders are another frequent cause of headaches following a collision. During a whiplash injury, the rapid acceleration and deceleration of the head and neck can strain multiple tissues simultaneously, leading to inflammation, muscle guarding, and altered movement patterns that contribute to headache symptoms.

Most patients improve with conservative care. Depending on the diagnosis, treatment may include chiropractic care, therapeutic exercise, soft tissue therapy, activity modification, and education designed to restore normal neck movement, reduce pain, and improve function. Treatment is individualized based on the patient's symptoms, examination findings, and overall health.

Seek immediate medical attention if your headache is severe or rapidly worsening, is accompanied by repeated vomiting, loss of consciousness, confusion, seizures, weakness, numbness, slurred speech, vision changes, difficulty walking, or loss of bowel or bladder control. These symptoms may indicate a more serious injury requiring emergency evaluation.

If you've developed headaches after a motor vehicle accident, early evaluation can help identify the source of your symptoms and determine the most appropriate treatment plan. Addressing these injuries early may help reduce the risk of persistent pain and improve recovery.

Interested in learning whether conservative chiropractic care may help your post-accident headaches? Contact our office today to schedule a comprehensive evaluation and discuss your personalized treatment plan.

Contact Us:

Dr. Peter Britton, DC & Dr. Alyssa Lenox, DC
1111 N. Northgate Way
Seattle, WA 98133
Phone: 206-523-2225
Appointments can be made on our website:
https://intouchwithhealthseattle.com/home

Sources:

  • International Classification of Headache Disorders, 3rd Edition (ICHD-3). Headache Attributed to Whiplash and Cervicogenic Headache. Available through PubMed.

  • Blanpied PR, Gross AR, Elliott JM, et al. Neck Pain: Revision 2017 Clinical Practice Guidelines From the Orthopaedic Section of the American Physical Therapy Association. Available through PubMed.

  • Ontario Protocol for Traffic Injury Management (OPTIMa). Clinical Practice Guidelines for the Management of Neck Pain and Associated Disorders Following Traffic Injury. Available through PubMed.

  • Centers for Disease Control and Prevention (CDC). Clinical Guidance for Mild Traumatic Brain Injury (Concussion). Available through PubMed.

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