It is alarming how psychiatric diagnoses have crept into the political commentary. Donald Trump, we’ve been told, has narcissistic personality disorder, malignant narcissism, narcissistic alexithymia, bipolar disorder, hypomanic temperament, delusional disorder, paranoia, senile dementia, extreme hedonism, histrionic personality disorder, impulse disorder, attention deficit/ hyperactivity disorder (ADHD) and dyslexia. He’s also been called a sociopath and psychopath.