Abstract
SummaryTreatment-resistant schizophrenia is the object of intense interest because of recent developments in its treatment and aetiology. The actual definition of treatment-resistant schizophrenia is, however, still controversial. It should reflect the legitimate and varied needs and perspectives of people with schizophrenia, their family members, mental health care givers, mental health administrators, public health officials, and those who fund the direct and indirect costs of treating schizophrenia.The most common definition of treatment-resistant schizophrenia denotes patients with schizophrenia who, despite at least two adequate trials of classical neuroleptic drugs, have persistent moderate to severe positive, or disorganisation, or negative symptoms together with poor social and work function over a prolonged period of time. This definition reflects the viewpoint of people with this illness, their family members, and mental health care givers. Approximately 30% (range 10–45%) of schizophrenic patie...