A 39-year-old woman with hypertension and new-onset seizures.

A 57-year-old woman with a history of lung cancer presents with headaches, left-sided weakness, and an acute decline in mental status.

A 4-year-old girl with a history of gelastic seizures.

A 26-year-old man with bilateral sensorineural hearing loss.

A 65-year-old man with left facial swelling for the past several days.

A 52-year-old man struck by an automobile while crossing the street.

A 55-year-old woman presents after a syncopal episode after initiation of a therapeutic epidural injection.

A 65-year-old woman with fever, vomiting, diarrhea, and rapidly declining level of consciousness.

A 23-year-old woman with a central nervous system inflammatory condition presents with recurrent headaches.

A 3-month-old infant born prematurely at 34 weeks presents with microcephaly.

A 41-year-old man with worsening headache, mental status change, balance issues, blurred vision, and progression of numbness.

A 70-year-old woman with right-sided enophthalmos.

A 19-year-old woman with fever, fatigue, and right neck mass.

A man presents with headache.

An 11-year-old boy with mental status changes.

A 45-year-old man with fevers, subacute memory problems, and tremor.

A 32-year-old woman with migraines.

A 57-year-old woman with frequent falls for the past month.

A 14-year-old boy undergoing imaging after cardiac arrest and house fire.

A 47-year-old woman with progressive numbness, hearing loss, vision changes, dysphagia, and nausea/vomiting over the past two months.