Leaders, Fools and Impostors: Essays on the Psychology of Leadership.
That is the name of a short and excellent book by Manfred F.R. Kets de Vries. Manfred is a Dutch psychotherapist, leadership consultant, who is simply brilliant. While I can't say that I follow (or understand) the Freudian origins of the leadership dysfunctions he discusses, when it comes to describing the nature and experience of those dysfunctions - he is EXCELLENT.
Manfred deals with issues of power, authority, control, fear, loss, sexuality, hubris, isolation, emotional nullness (Alexithymia - your new word for the day, I am sure!), narcissism and more. Late in his book he lists the warning signs that a leader is no longer managing the balancing act and is skirting with danger (and disaster). Here are some of the signs he lists.