Ariesagain,
Yes - I have tried to explain generally to him how it works, but he isn't interested. It helps me in a way to understand the mechanism though. I've done some reading there and have lots more to learn. The medication interaction is a problem and certainly makes it worse. His meds haven't been working for some time now and at this point it is getting worse quite quickly.
It's a vicious cycle between two really hard diseases. Sometimes I just want to whack him over the head with a frying pan and see if some of his brain's crossed wires sort themselves out... It works with computers right? Jk. I don't want to dent the poor man! He's got enough as it is!