V.A. female, 67 years, old admitted in our clinic for neurological assessment because of a parkinsonian syndrome, in association with neurocognitive disorder established in a psychiatric service. Motor disturbances and cognitive disorders are frecquently associated in Dementia with Lewy body (DLB) and in Parkinson Disease (PD). Psychiatric symptoms are difficult to manage as antipsychotics have frequently motor side effects. Criteria for possible and probable diagnosis of DLB according McKeith criteria and Diagnostic and Statistical Manual of Mental Disorders (DSM 5) are discussed.