Revisiting an old foe: The face of psychosis in neurosyphilis.

A delusional, agitated middle-aged man presented to hospital with a tenacious psychotic episode. Upon appropriate therapy for neurosyphilis, dramatic resolution of this brief episode ensued, prompting a literature review of psychosis associated with neurosyphilis.

Diagnostic challenges with acellular bacterial meningitis.

An immunocompetent adult presenting with acellular pneumococcal meningitis is a rare occurrence and may pose a diagnostic challenge.