Neuropsychiatric evaluation in an outpatient setting

In a retrospective case review of 336 outpatients who underwent neuropsychiatric evaluations, patients were sorted into five groups: 1) atypical psychiatric; 2) atypical neurological; 3) prior psychiatric/new-onset neurological; 4) prior neurological/new-onset psychiatric; 5) dementia versus pseudodementia. Cluster analysis of 19 presenting complaints differentiated among groups. Post-consultation changes in preconsultation diagnosis occurred frequently overall, with more new case finding for psychiatric than for neurological disorders. For example, mood disorder diagnoses increased from 7.7% to 16.1%. Overall, dementia was the most common postconsultation diagnosis (32.8%). The authors conclude that suspicion for dementia should be high in neuropsychiatric referrals and that mood disorders may be especially common in neuropsychiatric patients.