Signs and symptoms of an injury to the brain include:

• A. Nausea, vomiting and combative behavior
• B. Headache and dizziness
• C. Rash and fever
• D. Shortness of breath

Answer: (A)

The key idea is that brain injury often shows changes in mental status along with symptoms tied to the brain’s function. Nausea and vomiting occur after head trauma because the brain’s control centers can be irritated or pressured, and vomiting can reflect that disturbance. Combative or agitated behavior signals an altered level of consciousness or confusion, which is a red flag for brain injury. Together, these signs point to CNS involvement and are more specific to head injury than the other options.

Headache and dizziness can happen with many conditions and aren’t as specific to brain injury on their own. Rash and fever suggest infection or illness elsewhere, and shortness of breath points to respiratory or cardiac problems, not primarily brain injury. That combination makes nausea, vomiting, and combative behavior the most indicative signs of a brain injury among the choices. If you see these signs, treat as a potential head injury and ensure airway, breathing, and circulation are supported while monitoring the patient and seeking further evaluation.