The document outlines the ICD-10 diagnostic criteria for schizophrenia, which requires the presence of two or more of the following symptoms: thought echo, thought insertion or withdrawal, thought broadcasting, delusions of control or influence or passivity, auditory hallucinations discussing the patient, bizarre delusions, persistent hallucinations with fleeting delusions, thought disorganization, catatonic behavior, negative symptoms, or a change in personal behavior. The criteria are grouped into five categories, with each category requiring two of the listed symptoms or one symptom.