Posttraumatic headache and the postconcussion syndrome.

Although headache is the most common sequelae of head injury, the posttraumatic headache is associated frequently with dizziness, irritability, lack of concentration, and intolerance to alcohol ingestion as a part of a symptom complex known as the postconcussion syndrome. This article clarifies the definitions of acute traumatic headache, posttraumatic headache, and the postconcussion syndrome and improves diagnostic ability, making the assessment and treatment of patients with these three conditions more accurate and effective.