Mental illness affects the thinking and behavior of the person causing discomfort or disability. The causes of mental illness are not well understood, but what is certain is that genetic factors, various stresses and the type of interaction or connection with others, depression, insanity, anxiety, and obsession can be called mental illness.
Section 84 of IPC also speak about insanity as a defense as Act of a person of unsound mind at the time of doing a crime or incapable of knowing the nature of the act, or that he is doing what is either wrong or contrary to law.
According to section 84 can we say these circumstances such as, becoming flustered and out of control for a variety of reasons under certain circumstances or sometimes we feel sad, and sometimes a state of tension and anxiety, anger and confusion overwhelms us that these states do not last long, which studies in psychiatric hospitals show a direct link between the majority of crimes and mental illness, that situations are very common in our daily behaviors can be used as a defense after committing a crime which has led to irreversible crimes.
So the present study (Mental disorder and commission of crime - Analysis of legal position in India) examined the mental disorders and crime relation, deference between mental illness and mental disorders, types of mental disorders and factors of mental disorder and its legal position in India with reference of foreign books.