Which of the following symptoms indicates a serious TBI?

Inability to nurse in infants can be considered a serious symptom of traumatic brain injury (TBI). This condition often implies significant neurological impairment or distress in an infant, which can stem from a disruption in normal brain function due to a TBI. When an infant exhibits this symptom, it can indicate that the injury has affected areas of the brain responsible for motor function and coordination, essential for feeding.

In contrast, symptoms like a minor headache, temporary dizziness, and short-term memory loss are generally less severe and can often be associated with milder forms of brain injury or other non-life-threatening conditions. These symptoms may not indicate serious injury and can resolve on their own or may require only mild intervention. However, the inability to feed in infants is a more concerning sign that necessitates immediate medical evaluation and intervention, as it could indicate significant underlying issues, including potentially life-threatening conditions.