Schizophrenia is a mental disorder that makes it difficult to tell the difference between real and unreal experiences, to think logically, to have normal emotional responses, and to behave normally in social situations. Schizophrenia is one of the most disturbing mental illnesses, marked by delusions and hallucinations. It is a psychotic disorder or group of disorders marked by disturbances in thinking, emotional responsiveness, and behavior. Schizophrenia is the most chronic and disabling of the severe mental disorders, connected to abnormalities of brain structure and function, disorganized behavior, delusions, and hallucinations.
The term schizophrenia comes from two Greek words that mean "split mind." It was founded around 1908, by a Swiss doctor Eugen Bleuler, to describe the splitting apart of mental functions that he said as the central characteristic of schizophrenia. Schizophrenic patients are typically unable to filter sensory stimuli and may have enhanced perceptions of sounds, colors, and other features of their environment. If untreated, most people diagnosed with schizophrenia slowly withdraw from interactions with other people, and lose their ability to take care of personal needs and grooming.
No cause of schizophrenia has been identified, but a number of cases have been caught up and are the subject of research. Schizophrenia is thought to be the end result of a combination of genetic, neurobiological, and environmental causes. It can be inherited or causes by environmental factors as well. Most cases of schizophrenia appear in the late teens or early adulthood. A big hypothesis looks at the relationship between the disease and excessive levels of dopamine, a chemical that transmits signals in the brain (neurotransmitter). The genetic factor in schizophrenia has been emphasized by recent findings that first-degree biological relatives of schizophrenics are ten times as likely to develop the disorder as are members of the