why in mental illness the inner membrane collapses but the outer one does not

I have to show how my theory predicts that the inner membrane collapses under mental illness but the outer membrane doesn't. Well, there is a connection. I can't show the details because it's all in my own character set which doesn't type, but in general it is that the phenomenon which brings about mental illness is gas exchange in breathing. And since the fetus in the womb doesn't breathe air, the membrane that forms at that time is not vulnerable--the outer one. After birth breath begins, so the membrane that forms then--the inner one--is vulnerable.