[Late-onset schizophrenia and schizophrenia-like psychosis with very late onset].

This review focuses on late-onset schizophrenia and schizophrenia-like psychosis with very late onset (VLOSLP) with focus on their psychopathologic, neuropsychologic, and neurobiologic aspects. A literature review on late-onset schizophrenia and VLOSLP was conducted based on publications from PubMed, Scopus, and Google Scholar databases up to December 2023. It may be noted that research into schizophrenia has largely focused on early-onset patients, and research into the mental health of older people has focused primarily on dementia and depression, with relatively little information on late-onset schizophrenia and VLOSLP. The nosology of late-onset functional psychoses is still poorly understood. There is currently no consensus on the diagnostic framework for psychosis labeled by the term VLOSLP. These deficiencies need to be addressed in order to understand the background of VLOSLP, the course and prognosis of the illness, and to develop successful management and treatment strategies for these patients, as older adults are more susceptible to the adverse effects of psychotropic medications. Therapy should be holistic, including not only medication but also psychotherapy, and the key role of caregivers of elderly schizophrenia patients should be taken into account. There should be judicious use of pharmacotherapy with an assessment of its risks and benefits.