Neurosyphilis and organic psychosis.

: Neurosyphilis is a Central Nervous System infection that can manifest as a psychiatric condition. Although neurosyphilis is not widely considered in the differential when patients present with psychiatric symptoms, routine Rapid Plasma Reagin (RPR) screening is indicated when assessing new-onset psychiatric illness. This case report will illustrate the usefulness of RPR testing for patients admitted to inpatient or outpatient psychiatric treatment.