<Li> Simple schizophrenia: Insidious and progressive development of prominent negative symptoms with no history of psychotic episodes . (ICD code F20. 6) </Li> <Li> Other schizophrenia include cenesthopathic schizophrenia and schizophreniform disorder NOS (ICD code F20. 8). </Li> <P> Psychotic symptoms may be present in several other mental disorders, including bipolar disorder, borderline personality disorder, drug intoxication, and drug - induced psychosis . Delusions ("non-bizarre") are also present in delusional disorder, and social withdrawal in social anxiety disorder, avoidant personality disorder and schizotypal personality disorder . Schizotypal personality disorder has symptoms that are similar but less severe than those of schizophrenia . Schizophrenia occurs along with obsessive - compulsive disorder (OCD) considerably more often than could be explained by chance, although it can be difficult to distinguish obsessions that occur in OCD from the delusions of schizophrenia . A few people withdrawing from benzodiazepines experience a severe withdrawal syndrome which may last a long time . It can resemble schizophrenia and be misdiagnosed as such . </P> <P> A more general medical and neurological examination may be needed to rule out medical illnesses which may rarely produce psychotic schizophrenia - like symptoms, such as metabolic disturbance, systemic infection, syphilis, AIDS dementia complex, epilepsy, limbic encephalitis, and brain lesions . Stroke, multiple sclerosis, hyperthyroidism, hypothyroidism, and dementias such as Alzheimer's disease, Huntington's disease, frontotemporal dementia, and Lewy Body dementia may also be associated with schizophrenia - like psychotic symptoms . It may be necessary to rule out a delirium, which can be distinguished by visual hallucinations, acute onset and fluctuating level of consciousness, and indicates an underlying medical illness . Investigations are not generally repeated for relapse unless there is a specific medical indication or possible adverse effects from antipsychotic medication . In children hallucinations must be separated from typical childhood fantasies . </P>

Who is most likely to be diagnosed with schizophrenia