Trump’s craziness

Doonsbury's take: the disagreements are just about which disorder he has!
Trump's doctor: "you're the sanest person in the history of the world"

Speculation about Trump's mental state has been around for a while.  This morning an article in the International New York Times says that the most common guess is he has Narcissistic personality disorder.  (The guy who wrote the criteria for NPD disagrees). For we armchair psychiatrists it seems spot on.  Look at the description of it in Wikipedia (below).
Does is sound like someone we know, or what?!
Then again, his people may know it, and excuse it a healthy dose of ego, needed to shake things up.
From Wiki:

Narcissistic personality disorder (NPD) is a personality disorder in which there is a long-term pattern of abnormal behavior characterized by exaggerated feelings of self-importance, an excessive need for admiration, and a lack of understanding of others' feelings.
People affected by it often spend a lot of time thinking about achieving power or success, or about their appearance. They often take advantage of the people around them. The behavior typically begins by early adulthood, and occurs across a variety of situations.