What initial steps should be taken for managing a head injury?

Stabilizing the spine first is crucial in managing a head injury because there may be an associated cervical spine injury. Any movement of the head or neck could potentially exacerbate a hidden spinal cord injury, leading to irreversible damage. By stabilizing the spine, healthcare providers prioritize the safety of the patient and help prevent further injury while a more complete assessment can take place.

Performing a vital signs check, while important in the overall assessment and monitoring of the patient, should follow the stabilization of the spine to ensure that the management focuses first on preventing further damage. Administering corticosteroids isn't a standard initial step for all head injuries and is generally reserved for specific situations, such as managing edema in severe head trauma. Monitoring for fever also has its place in post-injury care, but it does not address the immediate and critical need to stabilize the patient from potential cervical injuries. Thus, stabilizing the spine is the most appropriate first step in this scenario.