A head injury is any trauma to the head, including the scalp, skull, brain, or other tissue and blood vessels. Head injuries can be closed or open, and can range from mild to severe:
Symptoms
A raised bump or bruise, a cut on the scalp, headache, dizziness, lightheadedness, nausea and vomiting, blurred vision, or loss of balance
Confusion, disorientation, difficulty concentrating or remembering, or changes in sleep patterns
Irritability, frustration, depression, anxiety, or mood swings
Sensitivity to light or sound, ringing in the ears, or an unexplained bad taste in the mouth
Some symptoms may not appear right away, and symptoms can change during recovery. Seek immediate medical attention if the person experiences any of the following symptoms, especially within the first 24 hours after an injury: