CausesBy Mayo Clinic Staff
Some experts believe post-concussion symptoms are caused by structural damage to the brain or disruption of neurotransmitter systems, resulting from the impact that caused the concussion.
Others believe post-concussion symptoms are related to psychological factors, especially since the most common symptoms — headache, dizziness and sleep problems — are similar to those often experienced by people diagnosed with depression, anxiety or post-traumatic stress disorder.
In many cases, both physiological effects of brain trauma and emotional reactions to these effects play a role in the development of symptoms.
Researchers haven't determined why some people who've had concussions develop persistent post-concussion symptoms while others do not. No proven correlation between the severity of the injury and the likelihood of developing persistent post-concussion symptoms exists.
Aug. 19, 2014
- Eisenberg MA, et al. Duration and course of post-concussive symptoms. Pediatrics. 2014;133:999.
- Guinto G, et al. Postconcussion syndrome: A complex and underdiagnosed clinical entity. World Neurosurgery. In press. June 5, 2014.
- Cancelliere C, et al. Systematic review of prognosis and return to play after sport concussion: Results of the International Collaboration on Mild Traumatic Brain Injury Prognosis. Archives of Physical Medicine and Rehabilitation. 2014;95:S210.
- Evans RW. Postconcussion syndrome. http://www.uptodate.com/home. Accessed June 5, 2014.
- Ferri FF. Ferri's Clinical Advisor 2014: 5 Books in 1. Philadelphia, Pa.: Mosby Elsevier; 2014. https://www.clinicalkey.com. Accessed June 5, 2014.
- Traumatic brain injury: Hope through research. National Institute of Neurological Disorders and Stroke. http://www.ninds.nih.gov/disorders/tbi/detail_tbi.htm. Accessed June 5, 2014.
- Swanson JW (expert opinion). Mayo Clinic, Rochester, Minn. June 11, 2014.
- Lucas S. Headache management in concussion and mild brain injury. Archives of Physical Medicine and Rehabilitation. 2011;3:S406.