Fideopsychosis

I have been somewhat reticent to post this, because I am afraid somebody is going to misinterpret what I say and take offense at it. If you are that person, please post here so I can have a chance to respond.

I have long thought that we need a word for the type of insanity that some people demonstrate when they talk about religion. Everybody has probably met somebody who is perfectly reasonable, only to be warned not to talk to that person about religion. If you do engage the person on religion, you find yourself lost in a maelstrom of bizarre ideas and find rational discourse impossible. I don't mean to say that all religious people are insane, only that certain people seem to lose their capacity for rational thought when discussing religious topics.

I know some people will say that these are likely people who have such a sublime understanding of ultimate truths that they cannot communicate them without seeming insane. Perhaps.

The word I propose is "fideopychosis." I will take other suggestions.