There is no "clinical" or "DSM" context to insanity. Insanity is not a medical term.
Again, it is my strong opinion that the OP was using "insane" in its DSM-related form, i.e. its medical-related form. Yes, most probably today's medics (and today's DSM) has (have) become too prudish to have "insane" and "insanity" included in their official terms list, but that's another story.