The brain's impact with these inner surfaces of the skull causes tearing and bruising that results in brain damage. Following TBI, sight, sound, taste, touch, and smell can suffer decreased or increased sensitivity, or complete loss. Loss of sensation to parts of the body and hypersensitivity are also common. Double vision, loss of depth perception, or the loss of sight in one or both eyes can occur. Sometimes a patient loses the ability to know where the arms and legs are in relationship to the body.
Seizures can occur.
Post-concussion syndrome presents with headaches, spasticity, dizziness, reduced coordination, sensory dysfunction, depressed motivation, emotional volatility, slowed thinking, and impaired reading and writing skills. Patients complain of trouble organizing thoughts, inability to express themselves, difficulty in selecting and recalling words, or difficulty learning and retaining new information. Also, patients may become short-tempered, easily confused, agitated, and may lose sense of direction. These are the same symptoms and complaints observed and experienced by survivors of severe injury. There is no organized long-term system of community care for the traumatically brain injured.