Is a person with a psychopathic disorder aware of it? A (former) friend of mine shows lots of symptoms of a psychopathic disorder.

Years later after we both met the last time, I'm still not sure whether he is/was aware of this disorder or not.

So my question:

Is a person with potentially psychopathic behaviour aware of why he behaves like he does or not?

Plus: If he is aware, do such persons usually suffer from that knowledge/disorder or like it?
Sometimes they are aware.

For example a manic-depressive is mostly aware of having a psychological problem during his depressive phases, but will usually perceive himself well while manic. Schizophrenics often understand that they have delusions, but many of them can only understand this while they are in a non-delusional phase.

Sadists are often aware of being deviant, but usually enjoy what they do. Manics don't suffer either, but feel grandiose.

Edit

Oops, I read "psychiatric disorder" instead of psychopathy. So obviously most of what I wrote is beside the point here. Read what I wrote about sadists and ignore the rest. Sorry.



Source: Working in a psychiatric ward.