Insanity, craziness or madness is a spectrum of behaviors characterized by certain abnormal mental or behavioral patterns. Insanity may manifest as violations of societal norms, including becoming a danger to themselves and others, though not all such acts are considered insanity. In modern usage insanity is most commonly encountered as an informal unscientific term denoting mental instability, or in the narrow legal context of the insanity defense. In the medical profession the term is now avoided in favor of diagnoses of specific mental illness such as schizophrenia and other psychotic disorders. When discussing mental illness in general terms, "psychopathology" is considered a preferred descriptor.
http://en.wikipedia.org/wiki/Insanity
Therapists can be fooled trust me by some. They use the DSMIV here to diagnose but you would never get diagnosed as insane usually that is just a generic term and mostly used in the courtroom, it could be anything.
Many things can be treated. I did research some into crimes of passion and what they call momentary insanity. I don't know if I believe in that by definition. They could find a better one. Crimes of passion have been committed by anyone and usually jealousy is involved. An otherwise "normal" person will get so worked up they will kill or hurt another person. It is usually different with women and men so I don't know. Those mentioned prior have malfunctions in the brain usually such as schizophrenia. They have delusions and their world view is different. What the average person may think is happening can be entirely different. Then you have what most think of as totally insane, the serial murderer and many things can cause that. I have written on those as well such as Albert Fish and he could lucidly explain his motivation but of course he broke societal rules. He knew what he was doing but was he rational or "insane?"
In case you don't know who Albert Fish was:
Albert Hamilton Fish (May 19, 1870 – January 16, 1936) was an American serial killer and cannibal. He was also known as the Gray Man, the Werewolf of Wysteria, the Brooklyn Vampire, and The Boogeyman. A child molester and cannibal, he boasted that he had "had children in every state," and at one time put the figure at around 100. However, it is not clear whether he was talking about molestation or cannibalization, less still as to whether he was telling the truth. He was a suspect in at least five murders in his lifetime. Fish confessed to three murders that police were able to trace to a known homicide, and confessed to stabbing at least two other people. He was put on trial for the kidnapping and murder of Grace Budd, and was convicted and executed via electric chair.
http://en.wikipedia.org/wiki/Albert_Fish
