<prompt> True about late onset schizophrenia:Onset after 45 yrsOnset between 25-30 yrsPrognosis is poorOlfactory hallucinations are common  <response>: A i.e. Onset after 45 yrsLate onset schizophrenia is characterized by onset after age 45 years, more frequent female involvement, predominance of paranoid symptoms, ourable prognosis and patients usually do well on antipsychotic medicationQ. Late Onset Schizophrenia LOS VeryLate Onset Schizophrenia VLOS - According to International Late onset schizophrenia Group, LOS with onset in middle age 45 to 60 years is a neuro developmental disorder and that its difference with early onset schizophrenia are more of degree than of kind. It also postulated that very late onset schizophrenia like psychosis with onset over 60 year age is a neurodegenerative disorder with more brain abnormalities neuropsychological deficits. But a potential problem of this tripaite classification system is its reliance on age rather than clinical presentation. LOS patients typically meet criteria for the paranoid or undifferentiated subtype of schizophrenia. 