Hey @davidpakman,
From my own research and from what I have gathered over the years on the subject, I would definitely say Trump shows the tendencies of a Psychopath/ Sociopath. He seems to have little to no empathy towards others. He is a pathological liar. When someone does something to him that he considers wrong he goes into major vengeful mode ( Remember Rosie O'donnel). And he is just a ruthless man and will stomp over anyone who gets in his way to Success. These are all textbook traits of a sociopath.