Headache is reported in 90% of auto injury patients, and there are many different possible causes.
Cervicogenic headaches are probably the most common after a car crash. Cervicogenic means "originating in the neck" and these headaches are caused by irritation of the nerves that travel through the head and neck. These nerves are irritated either directly from the crash or as a result of ligament or a disc injury in the spine.
Tension headaches are also common, as the muscles can be injured in a collision, causing them to spasm.
Vascular symptoms, or injury to the blood vessels in your neck, are less common but can be very serious. Symptoms of vascular injury are dizziness, faintness, blurry vision, neck pain, and headache.
Brain injury can also cause headaches. If you struck your head during the collision, or if it was a high-speed crash, you may have suffered a traumatic brain injury. Brain injury, even mild cases, can have long-term effects on your health and productivity.
Finally, migraines are another kind of headache that has been reported after an auto injury.
Headache can be a symptom of a more serious injury, so it's important to have a comprehensive examination that includes neurological evaluation after a car crash.
Chiropractic is a proven, effective approach for many different kinds of headache pain.