Well...you asked the right person given my experience with a mental hospital.
Madness is an emotional outburst isolating a person from society because they are deemed "dangerous" or "different" from society and the cause of their madness is FROM not being able to keep up with society.
Or its from something personal, like a badfamily.
Or its from a trauma.
Or it might not even have a cause, it just happens
Basically its one of the results of an emotional and mental turmoil that eats away at you over time.
Then some part of you dies on the inside and your actions become rather...scary.
You might hear voices, you probably will want to forget everything, you might develop some kind of horrifying fetish, and violence on a broad scale is within your level of morals.
Because well...you are dead on the inside and you just want SOMETHING to end.
...thats not from any definition and i just thought that off the top of my head.
Probably scared someone off. Depressing and credible sounding isnt it?
Now...I said all of this, now why do you think i know all of this?
I said experience with a mental hospital, but what experience do you think that is?