Patients with delusional and bizarre thinking.

Patients with delusional or other types of bizarre thinking are often incorrectly labeled as schizophrenic. This error has significant medical and social implications to the patient. Delusional thinking has been linked with a variety of nonschizophrenic problems including the use of licit and illicit drugs, a wide variety of medical diseases, and nonschizophrenic psychiatric disturbances. A series of case studies in which the diagnosis of schizophrenia was incorrectly made elucidates the problem and helps the physician consider the alternatives.