N E C R O B U M P
I don't know what author OP is talking about but it sounds similar to what Arthur Kronfeld wrote about.
https://en.wikipedia.org/wiki/Arthur_KronfeldHe was a psychiatrist and had the (mis)fortune to meet Hitler in person before 1933.
After he emigrated to the USSR he wrote a short brochure about mental and physical health of the Nazi leaders called "Degenerates in Power". The target audience were soviet medical workers. Unfortunately, it exists only in Russian.
At the beginning, Kronfeld describes how he participated as an expert on the trial with Werner Abel. Abel was an ex-NSDAP member who accused Hitler & co. of taking money from an Italian agent Giuseppe Migliorati for ceasing the pan-German propaganda among the South Tyrol population.
When interrogated, Hitler wasn't able to give a concrete answer to any question, he was just running his usual yappanomics about his mission to save Germany. Before the trial started, Hitler attempted to physically assault Abel but when he saw that he is stronger than him, immediately pussied out and started angrily yelling slurs at him and was literally foaming from his mouth.
What follows are typical descriptions of the Nazi elite. They are cripples, sadists and sexual perverts - usually homosexuals, their heroic deeds of WWI are pure fiction. Goebbels is a dwarf with unbelievable sex appetite, Himmler is a midwit who became famous only by backstabbing his boss (Gregor Strasser), Goering is a drug addict who loves morphium
(which caused his obesity), is vain and loves to dress himself in finery but looks like a clown, Streicher is a hysterical retard who opposes vaccination since it's "poisoning German blood with foreign proteins", Ribbentrop is a crook who got rich by selling shitty champagne, Hess is a transvestite who calls himself "Fräulein Anna" etc. etc.