A head injury refers to any injury to the scalp, skull, brain or underlying tissues in the head. Head injuries can range from mild concussions to severe traumatic brain injuries. Common types of head injuries include hematomas, cerebral contusions, skull fractures, and diffuse axonal injuries. Symptoms vary in severity from mild headaches following a concussion to loss of consciousness and seizures with severe injuries. Treatment depends on the severity of the injury and may involve medication, surgery, and rehabilitation to help recover lost functions. Nursing care focuses on airway protection, monitoring for complications, preventing further injury, and supporting recovery.