In Shakespeare's Macbeth, Macbeth shows signs of a psychological problem. The most apparent psychological problem in Macbeth's case is schizophrenia. Schizophrenia is a mental disorder in which individuals can hear, see, or smell people, animals, and/or objects that do not actually exist. Additionally, people with schizophrenia experience a decline in their level of functioning; such as a decline in individual care for oneself and a slow or immediate need for others to care for them. The three ways Macbeth shows that he may be suffering from this mental disorder are by not being able to recognize the difference between his reality and that of others and by withdrawing physically and emotionally. The cause of schizophrenia in Macbeth's case may stem from oppressive guilt, although there is no known exact cause of schizophrenia. Macbeth struggles to separate what he believes to be true in his reality from the reality that is reality. As Macbeth contemplates Banquo's murder, Macbeth becomes detached from reality and begins to see an imaginary dagger o...