Chronic recurring vertigo and or imbalance can occur after major or minor head injury.
Some patients after  major or minor head injury have  chronic or recurring vertigo or imbalance. Several potential causes exist. Injury to the neck can cause “cervical vertigo/dysequilibrium”, see other discussion on this website of that disorder. The trauma which causes brain concussion can also bruise the inner ear or cause inner ear contusion. Vestibular symptoms from head injury  can be lasting. A recently described entity called dehiscent superior semicircular canal can be part of the problem. In the latter circumstance, a head injury can transmit energy through a rare naturally occuring hole in the upper balance canal, injuring the inner ear balance systems. Other ear trauma can also cause imbalance and position change induced dizziness. Many of these patients have puzzling problems which  can affect ability to return to work but many of the more  mildly injured persons do return to pre-injury activity.
- Management of posttraumatic vertigo., , Otolaryngol Head Neck Surg, 2005 Apr, Volume 132, Issue 4, p.554-8, (2005)
- Dizziness following head injury: a neuro-otological study., , J Neurol, 1995 Mar, Volume 242, Issue 4, p.222-30, (1995)
- [Histopathology of nonacoustic labyrinth following head injury in guinea pigs]., , Zhonghua Er Bi Yan Hou Ke Za Zhi, 1994, Volume 29, Issue 6, p.350-2, (1994)
- Vestibular disorders following head injury in children., , Int J Pediatr Otorhinolaryngol, 1985 Jul, Volume 9, Issue 2, p.135-41, (1985)
- Diagnosis and management of post-traumatic vertigo., , Laryngoscope, 2004 Oct, Volume 114, Issue 10, p.1720-3, (2004)
- Characterizing and treating dizziness after mild head trauma., , Otol Neurotol, 2004 Mar, Volume 25, Issue 2, p.135-8, (2004)