What symptoms can occur after a head injury?

Head injuries may cause symptoms such as dizziness and nausea. If a person suddenly falls, they may experience vertigo, difficulty concentrating, memory loss, depression, anxiety, and other symptoms, which could lead to dysfunction of the vascular nervous center and autonomic nerve regulation. Commonly observed signs include slowed heart rate, lowered blood pressure, pallor, excessive cold sweating, and even apnea, which are indications of a more severe condition.