Schizophrenia

The main symptom of schizophrenia is a feeling in which the patient may think that there is a plot against him/her. This feeling may result in the patient avoiding everything offered to him/her, which could potentially include medicine.
Schizophrenia, also sometimes called split personality disorder, is one of the psychotic mental disorders and is characterized by symptoms of thought, behavior, and social problems.
Schizophrenia seems to result from a breakdown in the mental process by which we differentiate our inner self from the outside world. To a normal person, thinking, speaking and hearing are quite different subjective experiences, but in schizophrenia, this differentiation becomes blurred.