The Ear Institute of Texas
A concussion is classified as a mild traumatic brain injury and in most cases full recovery occurs within 21 days. However, prolonged recovery occurs in 20% of cases and benefit from vestibular rehabilitation. The number one symptom that you will have a prolonged recovery is dizziness.
In most cases there is not a loss of consciousness; however, a brief loss of consciousness or immediate vomiting after trauma can actually indicate a more rapid recovery.