to the public and the international community according to a study by experts at the duke university medical center body around one in four u.s. presidents who have some sort of mental illness while in office why is trump so special and so different to merit this particular book which calls him a danger mental illness itself does not. involve. unfitness for duty an incapacity to carry out a duty it's really the specific symptoms the severity of the symptoms and the particular combination of impulsivity recklessness. an inability to accept facts rage reactions an attraction to violence are prone to incite violence all these things are signs of danger but to your contribution to this book on parks this wider societal impact that trump has had on the us you talk about a post from stress disorder that has spread since the election you say in the book that the trump presidency has been more unsettling in some ways than the events of nine eleven how can the act of one man winning one election cause people trauma is that a bit much a lot of people say. i mean i was curious to me too because it's not a. na