A 50-year-old woman is admitted with chief complaints of headache and decreased range of motion in her neck

A 50-year-old woman is admitted with chief complaints of headache and decreased range of motion in her neck. She also complains of vertigo, hearing loss in one ear, profuse sweating, and uncontrollable eye movements. Her past medical history indicates that she was in a motor vehicle accident three days before her admission.

• What specific diagnostic examinations would you recommend? Why?
• What conditions should be ruled out? Why?
• How would you distinguish between these conditions? What are the possible causes of these symptoms?