Association of Mild Traumatic Brain Injury With Bipolar Disorder

Letter to the Editor

Sir: Traumatic brain injury has an estimated prevalence of 2,500,000. Mild traumatic brain injury (mTBI), with a Glaskow Coma Scale score of 14 to 15, is a common neurologic disorder and a common cause of neurocognitive deficits. Most of the patients recover fully from mTBI, but 15% to 29% of patients have persistent neurocognitive problems.