A head injury refers to any trauma to the skull, brain, or scalp. It can result from various incidents, such as falls, sports accidents, or vehicle collisions. Symptoms may include headaches, confusion, dizziness, or loss of consciousness. Severity can range from mild concussions to severe traumatic brain injuries. Diagnosis often involves medical imaging, like CT scans or MRIs, to assess damage. Treatment depends on the injury's severity and may include rest, medication, or surgery. It's essential to monitor symptoms closely, as complications can arise, affecting cognitive and physical functions.