Which of the following is NOT a symptom of a head injury?

In the context of a head injury, increased energy levels is not a symptom typically associated with such an event. When a person experiences a head injury, common symptoms often include loss of consciousness, severe headaches, and dizziness.

Loss of consciousness can happen, particularly in cases of concussions or more severe traumatic brain injuries, indicating a significant impact on brain function. Severe headaches are also prevalent, as they may arise from swelling, bleeding, or disruption in normal cranial pressure due to the injury. Dizziness can occur due to vestibular system disruption or changes in brain function related to the injury.

Conversely, increased energy levels do not correlate with the physiological and psychological effects commonly followed by a head injury. Symptoms following such injuries often involve fatigue or lethargy rather than heightened energy, as the body typically engages in restorative processes post-trauma. Recognizing these symptoms is crucial in assessing the severity of a head injury and determining the necessary medical interventions.