I have a bit of background in garment technology... but not so much knowledge with medical issues. But I also have to deal with a tendency to chafe (even without cycling). I use a hair dryer. Not on my head/hair... I am bald there... but hairy as an ape other places.

I take a few minutes to eat and drink (and stop sweating) after my rides before hitting the shower. Then I dry completely after I've scrubbed clean.... even using the hair dryer.