Young Blonde Girl Going Crazy With Milk

Insanity is no longer considered a medical diagnosis but is a legal term in the United States, stemming from its original use in common law. The disorders formerly encompassed by the term covered a wide range of mental disorders now diagnosed as organic brain syndromes, schizophrenia, bipolar disorder and other psychotic disorders.
Legal use of the term
In United States criminal law, insanity may serve as an affirmative defense to criminal acts and thus does not need to negate an element of the prosecution's case such as general or specific intent. The States differ somewhat in their definition of insanity but most follow the guidelines of the Model Penal Code. All jurisdictions require a sanity evaluation to address the question first of whether or not the defendant has a mental illness.